CN110165117A - Battery pack, vehicle and energy storage device - Google Patents

Battery pack, vehicle and energy storage device Download PDF

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Publication number
CN110165117A
CN110165117A CN201910544377.6A CN201910544377A CN110165117A CN 110165117 A CN110165117 A CN 110165117A CN 201910544377 A CN201910544377 A CN 201910544377A CN 110165117 A CN110165117 A CN 110165117A
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CN
China
Prior art keywords
battery pack
frame
unit cell
rectangular unit
rectangular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910544377.6A
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Chinese (zh)
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CN110165117B (en
Inventor
鲁志佩
唐江龙
朱燕
鲁鹏
任正华
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BYD Co Ltd
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BYD Co Ltd
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Publication of CN110165117A publication Critical patent/CN110165117A/en
Priority to TW108139355A priority Critical patent/TWI753316B/en
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Publication of CN110165117B publication Critical patent/CN110165117B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • H—ELECTRICITY
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    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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    • H01M10/625—Vehicles
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    • H01M10/65—Means for temperature control structurally associated with the cells
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    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
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    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
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    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
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    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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    • H01M50/271—Lids or covers for the racks or secondary casings
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    • H01M50/317—Re-sealable arrangements
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    • H01M50/30—Arrangements for facilitating escape of gases
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    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
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    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
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    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
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    • H01M50/543—Terminals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
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    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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    • H01M10/00—Secondary cells; Manufacture thereof
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    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
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    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

This application discloses a kind of battery pack, vehicle and energy storage device, battery pack includes: battery pack case and multiple rectangular unit cells, and shell has first direction and the second direction perpendicular to first direction；Battery pack is formed at least one rectangular battery housing unit in shell along size >=600mm of first direction；Multiple rectangular unit cells are arranged in a second direction in the rectangular battery housing unit；Rectangular unit cell extends along the first direction, and is equipped with a rectangular unit cell in each rectangular battery housing unit in said first direction；Rectangular unit cell with a thickness of D, length L, be highly H；Battery pack is greater than or equal to L along the size of first direction；The length direction of at least one rectangular unit cell extends in a first direction, and meets: L > H, L > D, 600mm≤L≤2500mm, 23≤L/D≤208.Battery pack provided by the present application, volume utilization is high and cost is relatively low.

Description

Battery pack, vehicle and energy storage device
Cross reference to related applications
This application claims Biyadi Co Ltd in the Chinese Patent Application No. submitted on January 9th, 2019 “201910021244.0”、“201910020967.9”、“201910021246.X”、“201910021248.9”、 The priority of " 201910021247.4 " and " 201910020925.5 ", entire contents are hereby incorporated by reference in the application.
Technical field
The application belongs to technical field of vehicle manufacture, in particular to a kind of battery pack, with the vehicle of the battery pack , the energy storage device with the battery pack.
Background technique
It mainly include backpack body and to be mounted on packet intracorporal more in the related technology such as applied to the power battery pack of electric vehicle A battery modules, wherein each battery modules are assembled by multiple single batteries.
In above-mentioned related art, as shown in Figure 1, the backpack body of power battery pack is mostly divided by crossbeam 500, stringer 600 It is cut into the installation region of multiple battery modules 400a；Battery modules 400a is fixed on crossbeam 500 or stringer by modes such as screws On 600.Battery modules 400a includes the multiple single batteries being arranged successively, and multiple single batteries arrange to form cell array, End carriage and/or curb girder are provided with outside cell array；General include end carriage and curb girder simultaneously, and end carriage and curb girder are fixed, and surrounds appearance Receive the space of cell array.Meanwhile end carriage and curb girder are connected by screw to, or are connected by other connectors such as pull rods, with It realizes the fixation to cell array, forms battery modules 400a.
Inventor has found that battery modules 400a is fixed on crossbeam 500 by structures such as screws or indulges by test and analysis On beam 600, space is wasted, simultaneously as joined the connectors such as screw, weight is improved, reduces energy density；In addition, Battery modules 400a passes through the matching design of end carriage and curb girder, and end carriage and curb girder all have certain thickness and height, waste Space inside backpack body reduces the volume utilization of backpack body.Under normal circumstances, above-mentioned power battery pack in the prior art, The ratio of the sum of volume of single battery and backpack body volume is even lower 40% or so in backpack body.
Requirement with user to the cruising ability of electric vehicle is gradually promoted, and the situation limited in body bottom space Under, the power battery pack provided using above-mentioned prior embodiment, end carriage, the curb girder of battery modules 400a, power battery pack Internal connection mounting means etc., all reduces the utilization rate of 200 inner space of backpack body；Cause in power battery pack, monomer electricity The sum of the volume in pond and the ratio of 200 volume of backpack body are too low, and energy density is unable to satisfy the raising of the demand, are increasingly becoming An important factor for restricting electric vehicle development.Additionally, there are cumbersome assembling process, and assembling procedure is complicated, need first to be assembled into battery Mould group, then battery modules are mounted in backpack body, increase the costs such as human and material resources；Meanwhile because needing multiple assembling procedure, In the assembling process of power battery pack, the probability for generating fraction defective is enhanced, and repeatedly assembling increases power battery pack appearance It loosens, unstable possibility is installed, adverse effect, and the stability of power battery pack are caused to the quality of power battery pack Decline, reliability reduce.
Summary of the invention
The application is made to the discovery of following facts and problem and understanding by a large amount of R&D work based on applicant :
In the related technology, as shown in Figure 1, battery pack mainly includes battery pack case and multiple electricity for being mounted in battery pack case Chi Mo group 400a, each battery modules 400a include multiple single batteries and module framework, and multiple single batteries are assembled in mould group To constitute a battery modules 400a in frame.Multiple battery modules 400a are arranged and are mounted in battery pack case to shape At battery pack, battery pack case includes side frame 200a, the crossbeam being connected in side frame 200a 500 and stringer 600.
Battery pack in the related technology forms battery modules since multiple single batteries are assembled in module framework first 400a is then fitted into battery pack case, and module framework occupies a big chunk of the installation space in battery pack case, The utilization efficiency including interior installation space is reduced, reduces the quantity of the single battery in battery pack, affects battery pack Battery capacity.Further, since the irregularities of the shape of module framework, module framework is difficult to be closely arranged in battery pack It is interior, it further reduced the utilization rate of the installation space in battery pack.
In the related technology, battery pack increases number of elements, thereby increases cost due to needing module framework, moreover, In the manufacturing process of battery pack, since single battery needs to be assembled into module framework first, then module framework is installed Into battery pack case, process is increased, thereby increases cost.
In the related technology, as shown in Figure 1, module framework causes the quality of entire battery modules 400a big, and battery modules 400a is supported on bottom plate, and the stiffness and strength of bottom plate are required with high, more crossbeam 500 and stringer need to set in this way 600, further tie up limited space in battery pack case.
In order to solve the above technical problems, this application provides a kind of battery packs, comprising: battery pack case, battery pack case With first direction and perpendicular to the second direction of first direction；The battery pack is greater than or waits along the size of the first direction In being formed at least one rectangular battery housing unit in 600mm, the battery pack case；The multiple rectangular unit cell edge The second direction is arranged in the rectangular battery housing unit, and the rectangular unit cell extends along the first direction, and A rectangular unit cell is equipped in each rectangular battery housing unit in said first direction；Rectangular battery accommodates single Rectangular unit cell described in first rectangular battery housing unit with a thickness of D, the length of the rectangular unit cell is L, the square The height of shape single battery is H；The size of the battery pack in a second direction is greater than or equal to the L of rectangular unit cell；It is described The length direction of at least one rectangular unit cell extends along the first direction from the side of the rectangular battery housing unit To the other side of the rectangular battery housing unit, and meet: L > H, L > D, 600mm≤L≤2500mm, 23≤L/D≤ 208。
The battery pack of the application, internal includes rectangular battery housing unit, along the in each rectangular battery housing unit Two directions are arranged with multiple rectangular unit cells, and the rectangular unit cell extends in a first direction rectangular battery and accommodates list Member；In this way, during the installation process, rectangular unit cell can be directly installed in rectangular battery housing unit, first will be not necessarily to Several rectangular unit cells form battery modules in advance, then are mounted in battery pack, simplify installation procedure, save cost. Meanwhile the length L value of each rectangular unit cell is 600mm-2500mm, and L/D is in 23-208 interval range；By square The length L of shape single battery is made long, while in the range of L/D, so that the integral heat sink area of rectangular unit cell It improves.Longer L and relatively thin D, the heat inside one side rectangular unit cell are easier to be transferred to rectangular unit electricity The outside in pond；On the other hand, the relationship of L and D is more advantageous to so that the outer surface of rectangular unit cell, i.e. heat dissipation area become larger The integral heat sink effect promoting of battery pack improves safety and the stability in use of battery pack.
The application proposes a kind of battery pack, and plurality of single battery is directly installed in battery pack case, eliminates mould Framing, therefore, also referred to as without the battery pack of module framework.
Since single battery is directly installed in battery pack case, it is not necessarily to module framework, therefore the peace in battery pack case It fills space utilization to improve, the single battery quantity installed in battery pack case increases, and improves the battery capacity of battery pack, improves Cruising ability.
Further, since being not necessarily to module framework, single battery can be closely arranged in battery pack case, further The installation space utilization rate in battery pack case is improved, the quantity of single battery is increased.
Due to being not necessarily to module framework, reduces number of elements and assembling procedure, reduce costs.
The application also proposed a kind of vehicle, including above-mentioned battery pack.
The application also proposed a kind of energy storage device, including above-mentioned battery pack.
Possessed advantage is identical compared with the existing technology for the vehicle, the energy storage device and above-mentioned battery pack, This is repeated no more.
The additional aspect and advantage of the application will be set forth in part in the description, and will partially become from the following description It obtains obviously, or recognized by the practice of the application.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:
Fig. 1 is the perspective view of the explosion of battery pack in the related technology；
Fig. 2 is a kind of schematic perspective view of the single battery of embodiment of the application；
Fig. 3 is a kind of schematic perspective view of the battery pack of embodiment of the application (to show sealing cover)；
Fig. 4 is a kind of arrangement schematic diagram of the multiple single batteries of embodiment of the application in battery pack case；
Fig. 5 is a kind of schematic perspective view of the side frame of embodiment of the application；
Fig. 6 is the schematic perspective view of the side frame of the application another embodiment；
Fig. 7 is the schematic perspective view of the side frame of the application another embodiment；
Fig. 8 is the partial enlarged view in Fig. 7 at A；
Fig. 9 is a kind of sectional block diagram of the battery pack of embodiment of the application；
Figure 10 is the partial enlarged view in Fig. 9 at B；
Figure 11 is the cross-sectional view of the battery pack of the application another embodiment, wherein the first frame and the second frame are not shown；
Figure 12 is a kind of explosive view of the battery pack of embodiment of the application；
Figure 13 is a kind of schematic perspective view of the side plate of embodiment of the application；
Figure 14 is a kind of schematic perspective view of the end plate of embodiment of the application；
Figure 15 is a kind of schematic perspective view of the battery pack of embodiment of the application, wherein cell array includes single layer；
Figure 16 is the schematic perspective view of the battery pack of the application another embodiment, wherein cell array includes multilayer；
Figure 17 is the schematic perspective view of the battery pack of the application another embodiment, wherein cell array includes along Y-direction What is be distributed is multiple；
Figure 18 is the schematic perspective view of the battery pack of the application another embodiment, wherein cell array include along X to What is be distributed is multiple；
Figure 19 is the schematic perspective view of the battery pack of the application another embodiment, wherein cell array include along X to And Y-direction distribution is multiple；
Figure 20 is the schematic perspective view of the battery pack of the application another embodiment, wherein cell array includes single layer；
Figure 21 is the schematic perspective view of the battery pack of the application another embodiment, wherein cell array includes single layer；
Figure 22 is a kind of floor map of the liquid cooling plate of embodiment of the application；
Figure 23 is the floor map of the liquid cooling plate of the application another embodiment；
Figure 24 is the floor map of the liquid cooling plate of the application another embodiment；
Figure 25 is the schematic perspective view that a kind of battery pack of embodiment of the application is installed on vehicle；
Figure 26 is on a kind of vehicle of embodiment of the application for installing the cross-sectional view of the cavity of battery pack；
Figure 27 is the stereoscopic schematic diagram that a kind of battery pack of embodiment of the application is fixed on vehicle；
Figure 28 is the perspective view of the explosion that a kind of battery pack of embodiment of the application is fixed on vehicle；
Figure 29 is a kind of structural schematic diagram of the vehicle of embodiment of the application；
Figure 30 is a kind of structural schematic diagram of the energy storage device of embodiment of the application.
Appended drawing reference:
Vehicle 1, energy storage device 2,
Battery pack 10,
Rectangular unit cell 100, leading-out terminal 101, explosion-proof valve 103, cell array 400,
Battery pack case 200, side frame 200a, the first frame 201, the second frame 202, third frame 203, the 4th frame 204,
First end plate 207, the first connecting plate 207b, via hole 207c, the second end plate 208, the first side plate 209, side plate body 209a, the Two connecting plate 209b, the second side plate 210, bottom plate 211, panel 212,
Support plate 213, supporting surface 213a, mounting surface 213b, the first joint face 215, the second joint face 216, insulating layer 217 are led Hot plate 218, heat exchanger plates 219, sealing cover 220, gas vent 221, exhaust passage 222, gas-liquid separator 223, coolant duct 224, coolant inlet 225, cooling liquid outlet 226, feed liquor house steward 227, liquid outlet 228, coolant liquid main entrance 229, cooling Liquid general export 230,
First side bar 301, the first support plate 301a, the first supporting surface 301b, the first mounting surface 301c, the second side bar 302, second Support plate 302a, the second supporting surface 302b, the second mounting surface 302c,
Cell array 400,
Battery modules 400a, crossbeam 500, stringer 600,
First crossbeam 700, second cross beam 800；
The length L of single battery, the thickness D of single battery, the height H of single battery, the inner wall of the first frame and the second side The distance between inner wall of frame L2, the width L3 of battery pack case in a first direction, length of the battery pack case in second direction Spend L4.
Specific embodiment
Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.
The battery pack 10 of the application can be not only used for passenger car, can be also used for commercial vehicle, special purpose vehicle, steamer, spare Power supply (dps, ups), electric bicycle, battery-operated motor cycle, Segway Human Transporter etc. need to mention using rectangular unit cell 100 for it For on the device of electric energy, the battery pack 10 of the application can be used as the power battery pack of the vehicles.
Below with reference to Fig. 2-Figure 28 description according to the battery pack 10 of the embodiment of the present application.
Such as without special explanation, in embodiments herein, front-rear direction is the longitudinal direction of vehicle 1, i.e. X to；Left and right directions For the transverse direction of vehicle 1, i.e. Y-direction；Up and down direction is the vertical of vehicle 1, i.e. Z-direction.
In actual execution, after battery pack 10 is installed on vehicle, the length direction of battery pack 10 can along X to, The width direction of battery pack 10 can be along Y-direction, and the short transverse of battery pack 10 can be along Z-direction.Certainly, for different vehicles, The mounting means of adjustable battery pack 10 so that the length direction of battery pack 10 corresponds to Y-direction, width direction correspond to X to, or With other corresponding relationships.
As shown in Fig. 2-Figure 28, the battery pack 10 of the application includes battery pack case 200 and multiple rectangular unit cells 100。
Battery pack case has first direction, second direction, third direction, first direction, second direction, third direction two Two is vertical.First direction is parallel with the length direction of rectangular unit cell 100, the thickness of second direction and rectangular unit cell 100 Degree direction is parallel, and third direction is parallel with the short transverse of rectangular unit cell 100, different when pressing rectangular unit cell 100 Direction when being arranged in battery pack case, above-mentioned first direction, second direction, third direction and battery pack case it is actual The corresponding relationship of length direction, width direction and short transverse needs the adjustment of adaptability.
Above-mentioned first direction, second direction, third direction and X depend on battery pack to, the practical corresponding relationship of Y-direction, Z-direction Arragement direction of 10 installation direction and rectangular unit cell 100 in battery pack case.
In actual execution, when battery pack 10 is installed on vehicle, in the embodiment shown in Figure 17-Figure 20, electricity For length direction and the X of pond packet 10 to parallel, first direction can be horizontally-parallel with the width direction of battery pack 10 and vehicle 1, Second direction can be parallel with the longitudinal direction of the length direction of battery pack 10 and vehicle 1, and third direction can be with the height of battery pack 10 Spend the vertical parallel of direction and vehicle 1.In the embodiment shown in Figure 21, the length direction with X of battery pack 10 are to parallel, and first Direction can be parallel with the longitudinal direction of the length direction of battery pack 10 and vehicle 1, and second direction can be with the width side of battery pack 10 To and vehicle 1 it is horizontally-parallel, third direction can be vertical parallel with the short transverse of battery pack 10 and vehicle 1.
As shown in Fig. 2, at least one rectangular unit cell 100 includes shell, cover board, pole piece and leading-out terminal 101, pole piece In the space that shell and cover board are formed, leading-out terminal 101 is connected with pole piece and stretches out cover board.Embodiment shown in Fig. 2 In, there are two leading-out terminal 101, two leading-out terminals 101 to stretch out respectively from two cover boards for the tool of rectangular unit cell 100.Certainly, In other embodiments, multiple leading-out terminals 101 of rectangular unit cell 100 can also be stretched out in the same cover board, or every A rectangular unit cell 100 is equipped with more leading-out terminals 101.
In some embodiments of the present application, as shown in Fig. 2, the two poles of the earth leading-out terminal 101 of rectangular unit cell 100 is distinguished It is drawn from the both ends of the length direction of rectangular unit cell 100.In other words, the length direction of rectangular unit cell 100 can be Current direction inside rectangular unit cell 100, that is, the current direction inside rectangular unit cell 100 is first direction.This Sample, since current direction is identical as the length direction of rectangular unit cell 100, effective heat dissipation area of rectangular unit cell 100 More greatly, radiating efficiency is more preferable.
As shown in Fig. 2, rectangular unit cell 100 is rectangular parallelepiped structure, and with length, thickness and between length and thickness Between height, the edge-on placement of rectangular unit cell 100, the length direction of rectangular unit cell 100 is first direction, thickness side To for second direction, short transverse is third direction, and two neighboring rectangular unit cell 100 passes through greatly in face of arranging by way of big face Cloth.
Rectangular unit cell 100 with a thickness of D, the length of rectangular unit cell 100 is L, the height of rectangular unit cell 100 Degree is H.
At least one rectangular unit cell 100 meets: L > H, L > D, 600mm≤L≤2500mm, 23≤L/D≤208.
In other words, which has length L in the longitudinal direction, in the thickness perpendicular to length direction There is thickness D on direction, there is height H in the height direction, height H is between length L and thickness D, the square of the application The size of the length direction of shape single battery 100 is much larger than short transverse and the size of thickness direction.
Specifically, rectangular unit cell 100 has big face, leptoprosopy and end face, and the long side in big face has above-mentioned length L, short Side has above-mentioned height H；The long side of leptoprosopy has above-mentioned length L, and short side has above-mentioned thickness D；The long side of end face has above-mentioned Height H, short side have above-mentioned thickness D.
In the related art, the size for how designing rectangular unit cell 100 makes it that can not only have battery appropriate Capacity and good heat dissipation effect are always one of battery technology field problem to be solved.
In a kind of embodiment provided by the present application, the ratio of the length L and thickness D of rectangular unit cell 100 meet 50 ≤L/D≤70.Under the ratio, available length is longer, the rectangular unit cell 100 of thinner thickness, in this manner it is ensured that In the case where the length of rectangular unit cell 100 extends in a first direction, moreover it is possible to keep resistance value appropriate and higher heat dissipation The adaptability of area and radiating efficiency, a variety of models is good.
In some embodiments, 500mm≤L≤1000mm.100 length of rectangular unit cell of the length is longer, with When battery pack 10, single rectangular unit cell 100 need to be only arranged along first direction.
In some embodiments, the volume of rectangular unit cell 100 is V, at least one rectangular unit cell 100 meets: 0.0005mm-2≤L/V≤0.002mm-2.Inventor is had found by a large number of experiments, when rectangular unit cell 100 meets above-mentioned limit Periodically, the cross section of rectangular unit cell 100 is small, the good heat dissipation effect of rectangular unit cell 100, such rectangular unit cell The temperature difference of 100 inside and surrounding is small.
In another embodiment provided by the present application, the ratio of the surface area S and volume V of rectangular unit cell 100 Meet 0.1mm-1≤S/V≤0.35mm-1, preferably 0.15mm-1≤S/V≤0.2mm-1.Under the ratio, above-mentioned length can be passed through Degree is longer, and the rectangular unit cell 100 of thinner thickness is realized, can also be realized by the adjustment of size, pass through control rectangle list The ratio of the surface area S and volume V of body battery 100, it is ensured that the surface of rectangular unit cell 100 along its length is enough Greatly, rectangular unit cell 100 has enough heat dissipation areas, to guarantee the heat dissipation effect of rectangular unit cell 100.
In another embodiment provided by the present application, the surface area S and ENERGY E ratio of rectangular unit cell 100 are full Sufficient S/E≤1000mm2•Wh﹣ 1, preferably 250 mm2•Wh﹣ 1≤S/E≤400 mm2•Wh﹣ 1.It is still available under the ratio Length is longer, and the rectangular unit cell 100 of thinner thickness, equally, the ratio can be longer by above-mentioned length.Thinner thickness Rectangular unit cell 100 is realized, can also be realized by the adjustment of other sizes.Pass through the table of control rectangle single battery 100 The ratio of area S and ENERGY E, it is ensured that while rectangular unit cell 100 has certain ENERGY E, surface area can expire Its radiating requirements of foot.
In some embodiments, above-mentioned rectangular unit cell 100 can be soft-package battery, soft-package battery refer to liquid lithium from One layer of polymeric shell on sub- battery case, in structure using laminated aluminum film in the case where security risk occurs, Soft Roll electricity Pond meeting air-blowing is split, without exploding, to improve the security performance of rectangular unit cell 100.On the other hand, Soft Roll electricity The pole piece accounting in pond is big, and volume utilization can be improved, and soft-package battery processing cost is low.
In another embodiment provided by the present application, above-mentioned rectangular unit cell 100 can be rectangular for metal shell Battery, it should be noted that when the shell of rectangular unit cell 100 is made of metal material, the gold of rectangular unit cell 100 The heating conduction for belonging to shell is more preferable, so as to further improve the radiating efficiency of rectangular unit cell 100, optimization heat dissipation effect Fruit.On the other hand, the strength and stiffness of hard shell battery itself are big, directly can play support by single battery 100 itself Effect, to guarantee the structural strength of battery pack instead of transverse and longitudinal girder construction, to reduce battery pack middle cross beam 500 and/or indulge Crossbeam 500 and/or stringer 600 can not be used in the use or even battery pack of beam 600, to reduce crossbeam and/or stringer The space occupied in battery pack, improves the space utilization rate of battery pack 10, enables more single batteries 100 as much as possible It is enough arranged in battery pack 10, and then improves capacity, voltage and the cruising ability of entire power battery pack.Such as in electric vehicle In, this design can by space utilization rate by original 40% or so, be increased to it is 60% or more even higher, such as 80%.
At least one rectangular battery housing unit is formed in battery pack case 200；The multiple squares of rectangular battery housing unit Shape single battery 100 is arranged in a second direction in the rectangular battery housing unit, the length of at least one rectangular unit cell 100 Spend the other side that direction extends rectangular battery housing unit along first direction from the side of rectangular battery housing unit.
In some embodiments, a rectangular unit electricity is only accommodated along its first direction in each rectangular battery housing unit Pond 100.Single rectangular unit cell 100 is only set in each rectangular battery housing unit along first direction, and is cooperated above-mentioned The rectangular unit cell 100 of strip is easy to implement the Mi Dui of multiple rectangular unit cells 100, and rectangular battery housing unit can It is close convenient for rectangular unit cell 100 and easily arrange using the limitation container as rectangular unit cell 100.
In each battery housing unit, rectangular unit cell 100 edge-on can be placed, and rectangular unit cell 100 is edge-on Placement refers to, two sides of two end faces of rectangular unit cell 100 respectively for rectangular battery housing unit, two neighboring rectangle The big face of single battery 100 is opposite, so that rectangular unit cell 100 has the function of substitution crossbeam, effect is more preferable, and intensity is more It is high.
In Fig. 2, Fig. 4, Figure 12, Figure 17-Figure 19 institute, multiple rectangular unit cells 100 are arranged in rectangular battery housing unit Interior, multiple rectangular unit cells 100 are installed in rectangular battery housing unit after being arranged in cell array 400, due to being not necessarily to mould Framing, most of space in such rectangular battery housing unit may be incorporated for accommodating rectangular unit cell 100 itself, together More rectangular unit cells 100 can be installed, the battery capacity of battery pack 10 is big in the battery pack case 200 of sample volume.
Due to being not necessarily to module framework, rectangular unit cell 100 can closely be arranged in rectangular battery housing unit It is interior, in the embodiment shown in Fig. 2, Fig. 4, Figure 12, Figure 17-Figure 19, mould group that no setting is required between multiple rectangular unit cells 100 Frame, two adjacent rectangular unit cells 100 can be bonded for the side face of length * height, the arrangement side of big face face Formula is easy to implement Mi Dui, and the overall stiffness of the cell array 400 of the formation of multiple rectangular unit cells 100 is big, in this way can pole The earth improves the installation space utilization rate in battery pack case 200, increases the quantity of rectangular unit cell 100.
The battery pack 10 of the application is the battery pack without module framework, and multiple rectangular unit cells 100 are directly installed on electricity In pond incrustation 200, module framework is eliminated, reduces number of elements and assembling procedure, is reduced costs, battery pack case 100 quantity of rectangular unit cell installed in 200 increases, and improves the battery capacity of battery pack 10, improves cruising ability.
In some embodiments of the present application, as shown in Fig. 3, Fig. 9 and Figure 12, battery pack case 200 includes: bottom case and close Capping, bottom case connect to form at least one rectangular battery housing unit with sealing cover.
In actual execution, bottom case is pallet, and pallet limits the rectangular battery housing unit with open end, sealing Lid 220 is installed on the open end of pallet, and the open end of 220 sealed rectangular batteries housing unit of sealing cover makes rectangular unit cell 100 are encapsulated in substantially in battery pack case 200, prevent the impurity of water dust from invading.It can pass through between sealing cover 220 and pallet Viscose glue is connected；Or part is connected through a screw thread between sealing cover 220 and pallet and is connected；Or lead between sealing cover 220 and pallet It crosses viscose glue and threaded connector is connected, being connected through a screw thread part between such sealing cover 220 and pallet may be implemented securely Connection, and may be implemented to seal everywhere by viscose glue.
It should be noted that battery pack 10 is not parcel, but the battery pack of large volume in some embodiments of the present application 10, corresponding above-mentioned pallet is Vehicular tray.
In Vehicular tray, since width of the carbody is larger, such as in 1.2m-2m；Length is longer, such as in 2m-5m；For Different vehicles, corresponding width of the carbody and length over ends of body are different.Biggish width of the carbody and length, so that being arranged in vehicle The pallet overall dimensions of body bottom require also larger.
For biggish pallet dimension, cause in the related art, as shown in Figure 1, it is necessary in the side frame 200a of pallet Interior setting crossbeam 500 and stringer 600 could provide enough support forces and structural strength for internal battery, and in automobile-used support After crossbeam 500 and stringer 600 is added in disk, the weight of entire Vehicular tray and inner space are all occupied, so that in pallet Portion, the space that can be efficiently used are lower；Simultaneously as the presence of crossbeam 500, is installed for cooperation crossbeam 500, it is necessary in pallet Multiple battery modules 400a are set on inner width and length direction, and installation is complicated, and the mounting structure needed is also more.
Due to being provided with crossbeam and/or stringer in battery pack case in the related technology, crossbeam and/or stringer occupy electricity Largely cause the volume utilization of battery pack case lower for accommodating the installation space of single battery in the incrustation of pond, lead to Often, the volume utilization of battery pack case is about 40%, even lower, that is to say, that in battery pack case in the related technology only There is 40% or so space to can be used for that single battery is installed, the quantity of open ended single battery in battery pack case is caused to have Limit, capacity, the voltage of entire battery pack are restricted, and the cruising ability of battery pack is poor.
However in this application, rectangular unit cell 100 is directly installed in battery pack case 200, to reduce battery Crossbeam and/or stringer can not be used in the use of 200 middle cross beam of incrustation and/or stringer or even battery pack case 200, from And reduce the space that crossbeam and/or stringer occupy in battery pack case 200, improve the space benefit of battery pack case 200 With rate, more rectangular unit cells 100 is enable to be arranged in battery pack case 200 as much as possible, and then improves entire electricity Capacity, voltage and the cruising ability of Chi Bao.Such as in electric vehicle, this design can be by space utilization rate by original 40% Left and right, be increased to it is 60% or more even higher, such as 80%.
Also, due to no longer needing to arrangement crossbeam and/or stringer in battery pack case 200, on the one hand, so that battery pack case 200 manufacture craft is simplified, and the assembling complexity of rectangular unit cell 100 reduces, and production cost reduces, another party Face, so that the weight saving of battery pack case 200 and entire battery pack, realizes the lightweight of battery pack.Particularly, work as battery When packet is mounted on electric vehicle, the cruising ability of electric vehicle can also be promoted, realizes the lightweight of electric vehicle.
In some embodiments, which can be to individually produce for installing the automobile-used support of rectangular unit cell 100 Disk when rectangular unit cell 100 is installed on pallet, and closes the spacious of pallet by sealing cover 220 as shown in Figure 27-Figure 28 After beginning forms battery pack 10, which can be installed on vehicle body by fastener, for example pallet can be set lifting lug and be used for It is lifted into the chassis of vehicle 1.
In further embodiments, as shown in Figure 25-Figure 26, which can also be integrally formed with the chassis of vehicle 1, bottom Disk has the first side bar 301 and the second side bar 302 being oppositely arranged along Y-direction, the first side bar 301 and the second side bar 302 as branch The supporting element of cell array 400 is supportted, the first end of rectangular unit cell 100 is supported in the first side bar 301, rectangular unit cell 100 second end is supported in the second side bar 302.
In actual execution, the first side bar 301 and the second side bar 302 extend downwardly and are equivalent to form pallet first Frame 201 and the second frame 202, the first side bar 301 and the second side bar 302 have bent (L shape) section, the first side bar 301 There is the direction sealing of the first support plate 301a, the first support plate 301a of protrusion towards the inner wall of rectangular unit cell 100 The face of lid 220 is equipped with the first supporting surface 301b, the first support plate 301a and is equipped with the first mounting surface away from the face of sealing cover 220 301c；The inner wall towards rectangular unit cell 100 of second side bar 302 has the second support plate 302a of protrusion, and second The face towards sealing cover 220 of fagging 302a is equipped with the second supporting surface 302b, the second support plate 302a and deviates from the face of sealing cover 220 Equipped with the second mounting surface 302c；First supporting surface 301b and the second supporting surface 302b is used to support rectangular unit cell 100, and first Mounting surface 301c and the second mounting surface 302c is used for mounting base 211.In this way without manufacturing independent pallet, and without considering support The assembly problem of disk and vehicle.
As shown in figure 26, the first support plate 301a of the first side bar 301 and the second support plate 302a of the second side bar 302 exist The high settings such as in Z-direction, in order to evenly support rectangular unit cell 100.
As shown in figure 26, the first support plate 301a of the first side bar 301 and the second support plate 302a of the second side bar 302 can Only mutually to extend to position spaced apart, need to set up bottom plate 211 with closed lower, in this way with respect to the frame of waste material in lower section Length it is short, it is possible to reduce the weight of vehicle；The of first support plate 301a of certain first side bar 301 and the second side bar 302 Two support plate 302a can mutually extend to it is connected, in this way formed lower end closed cavity, can effectively lower section protect square Shape single battery 100.
In some embodiments of the present application, as shown in fig. 5-10, pallet includes: side frame 200a and bottom plate 211, bottom Plate 211 is connected to limit rectangular battery housing unit, rectangular unit cell 100 and side frame 200a phase with side frame 200a Even.
In the related technology, as shown in Figure 1, battery is to be supported in bottom plate, height is required to the stiffness and strength of bottom plate, is just needed More crossbeam 500 and stringer 600 are set to enhance the support strength and rigidity of bottom plate, further tied up battery pack case Interior limited space, pallet can not provide enough bearing capacities if removing crossbeam 500 and stringer 600.
In the application, rectangular unit cell 100 is connected with side frame 200a, takes full advantage of the biggish side of stiffness and strength The performance of frame 200a, such bottom plate 211 also just make to remove 500 He of crossbeam in pallet without playing the role of main load-bearing Stringer 600 is possibly realized, and the space released can be used for arranging more rectangular unit cells 100.
It should be noted that side frame 200a is usually that hollow profile is made, side frame 200a as shown in Fig. 3-Figure 10 Hollow cavity for providing collision energy-absorbing, and the strong of side frame 200a can be enhanced in the plate muscle in the hollow cavity of side frame 200a Degree, the lateral wall of side frame 200a are also provided with reinforcing rib, and the strength and stiffness of side frame 200a fully meet installation battery The requirement of array 400.
In some embodiments, rectangular unit cell 100 can be connected with the internal perisporium of side frame 200a, or such as Figure 10 Shown in embodiment, rectangular unit cell 100 is supported in side frame 200a, takes full advantage of the rigidity of side frame 200a in this way The big performance with intensity.
Such as Fig. 3-Figure 12, as shown in Figure 15-Figure 19, side frame 200a include the first frame 201, the second frame 202, third Frame 203 and the 4th frame 204, the first frame 201, third frame 203, the second frame 202 and the 4th frame 204 sequentially finish up It is connected to form closed-loop shaped, the first frame 201, the second frame 202 are oppositely arranged along first direction, third frame 203 and the 4th side Frame 204 is oppositely arranged in a second direction.
First frame 201, the second frame 202, third frame 203 and the 4th frame 204 can be strip, the first side Frame 201,202 parallel interval of the second frame are opened, and third frame 203 and 204 parallel interval of the 4th frame are opened, and side frame 200a can be with Substantially rectangular in cross section frame.
In actual execution, after battery pack 10 is installed on vehicle, first direction can be Y-direction, and second direction can Think X to.Certainly, for different vehicles, the mounting means of adjustable battery pack 10, so that first direction corresponds to X to Two directions correspond to Y-direction, or have other corresponding relationships.
Bottom case is pallet, and pallet includes the first frame 201 and the second frame 202 being oppositely arranged along first direction, rectangle 100 one end of single battery is supported in the first frame 201, and the other end is supported in the second frame 202.
The inner wall towards rectangular battery housing unit of first frame 201 and the second frame 202 all has supporting surface 213a, rectangular unit cell 100 are respectively supported at the first frame 201 and the second frame 202 along the both ends of the length direction of itself Supporting surface 213a.The inner wall of first frame 201 refers to the wall surface of the second frame 202 of direction of the first frame 201；Second frame 202 inner wall refers to the wall surface of the first frame 201 of direction of the second frame 202.
Each rectangular unit cell 100 includes opposite first end and second end, as shown in Fig. 2, along rectangular unit cell The both ends in 100 length directions (Y-direction in figure), the first end of each rectangular unit cell 100 are supported on the first frame 201, the second end of each rectangular unit cell 100 is supported on the second frame 202.
In other words, each rectangular unit cell 100 extends between the first frame 201 and the second frame 202, multiple rectangles Single battery 100 is arranged along the length direction of the first frame 201 and the second frame 202, i.e., arranges in a second direction.
Here, the first end and second end of rectangular unit cell 100 is respectively supported at the first frame 201 and the second frame On 202, rectangular unit cell 100 can be supported directly by the first frame 201 and the second frame 202, that is, be individually positioned in first On the supporting surface 213a of frame 201 and the second frame 202, the first frame 201 and the second frame 202 can also be further secured to Supporting surface 213a on, for example be pasted onto the supporting surface 213a of the first frame 201 and the second frame 202, specific fixed form It is described in more detail below, for specifically supporting and fixing mode, with no restriction to this application.
Under the technical concept of the application, in one embodiment, along first direction, the first frame 201 and the second frame 202 The distance between and the size of rectangular unit cell 100 match, matching between the inner wall for referring to two frames herein Spacing can be coupled a rectangular unit cell 100, and this cooperation can be clearance fit, interference fit, immovable fitting, consolidate The various fit systems such as fixed cooperation, to realize the purpose of the application.
In some embodiments of the present application, the first end of each rectangular unit cell 100 can be supported directly or indirectly On the first frame 201, the second end of each rectangular unit cell 100 can be directly or indirectly supported on the second frame 202. Direct meaning refers to that the first end of rectangular unit cell 100 and the first frame 201 are directly engaged and supports and rectangular unit The second end of battery 100 and the second frame 202 are directly engaged；Indirectly meaning refers to, such as in some embodiments, rectangle The first end of single battery 100 is supported by first end plate 207 and the cooperation of the first frame 201, and the second of rectangular unit cell 100 End is supported by the second end plate 208 and the cooperation of the second frame 202.
It should be noted that the first frame 201 and the second frame 202 are oppositely arranged, the first frame 201 and the second side Frame 202 can be parallel to each other, and angled can also be arranged, can be linear structure and be also possible to curvilinear structures.Rectangular unit electricity Pond 100 can be vertical with the first frame 201 and/or the second frame 202, or is in the first frame 201 and/or the second frame 202 Acute angle or obtuse angle setting, for example, when the first frame 201 and the second frame 202 are parallel to each other, the first frame 201, the second frame 202 and rectangular unit cell 100 may be constructed the structures such as rectangle, square or parallelogram, sector；When the first frame 201 and second frame 202 it is angled when, the first frame 201, the second frame 202 and rectangular unit cell 100 may be constructed ladder The structures such as shape, triangle.The application is to the angular relationship between the first frame 201 and the second frame 202, rectangular unit cell 100 and the first angular relationship between frame 201 and the second frame 202 with no restriction.
In addition, " first end " and " second end " of rectangular unit cell 100 mentioned above is for describing rectangular unit The orientation of battery 100, it is not used to limit and describe the specific structure of rectangular unit cell 100, for example, first end and second End is not used to limit and describe the anode and cathode of rectangular unit cell 100, that is to say, that in this application, rectangular unit One end that battery 100 is supported on the first frame 201 is first end, and rectangular unit cell 100 is supported on one end of the second frame 202 For second end.
It should be noted that above-mentioned first end and second end does not mean that end face, in actual execution, with the first side What the supporting surface 213a of frame 201 and the second frame 202 formed supporting relation is the both ends of the side of rectangular unit cell 100, than Such as the end of the leptoprosopy of length * thickness.
In some embodiments, can be connected by pre-connection structure between rectangular unit cell 100 and side frame 200a, To prevent the rectangular unit cell 100 of no module framework from shaking in pallet, and convenient for installing fixed structure additional below.For example, square The both ends of shape single battery 100 can be adhered to the supporting surface 213a of the first frame 201 and the second frame 202, the mode of bonding Quickly, and assembly can be fast implemented by way of length direction (second direction) gluing of supporting surface 213a single.
In some embodiments, the end of the inner wall of the first frame 201 and the second frame 202 and rectangular unit cell 100 Sandwiched insulation board between face, to prevent rectangular unit cell 100 to be connected with frame.End (the length side of rectangular unit cell 100 To end) be equipped with leading-out terminal 101, the first frame 201 and the second frame 202 respectively include and rectangular unit cell 100 The inner wall of the matched inner wall of both ends of the surface, the first frame 201 and the second frame 202 end with rectangular unit cell 100 respectively Sandwiched insulation board between face, insulation board is for preventing the leading-out terminal 101 of rectangular unit cell 100 to be connected with side frame 200a.
As shown in Fig. 5-Fig. 7 and Figure 10, the inner wall towards rectangular battery housing unit of the first frame 201 has inside The inner wall towards rectangular battery housing unit of the support plate 213 of protrusion, the second frame 202 has inwardly projecting support plate 213, supporting surface 213a are set to the one side (upper surface) towards sealing cover 220 of support plate 213, and support plate 213 deviates from sealing The one side (lower surface) of lid 220 forms mounting surface 213b, and mounting surface 213b is used for mounting base 211.
In actual execution, as shown in Figure 5-Figure 7, the first frame 201, the second frame 202, third frame the 203, the 4th Frame 204 is common the support plates 213 of high settings such as inwardly to stretch out, and such support plate 213 is equivalent to as closed-loop shaped, and support plate The mounting surface 213b that 213 lower surface is formed also is annular, is easily installed bottom plate 211, can between bottom plate 211 and mounting surface 213b It is connected with being bonded.
As shown in Figure 10, the inner ring of one end away from sealing cover 220 of side frame 200a has the deep gouge of annular, deep gouge Bottom wall forms mounting surface 213b, and bottom plate 211 is installed on deep gouge.In other words, the lower surface of support plate 213 is relative to side frame 200a Lower surface be recessed upwards, can use the inner space mounting base 211 of side frame 200a in this way, such as shown in Fig. 10 In embodiment, the lower surface of bottom plate 211 and the lower surface of side frame 200a are substantially flush, in this way, the height of entire battery pack 10 It is small.
Rectangular unit cell 100 is supported in side frame 200a, and rectangular unit cell 100 is spaced apart setting with bottom plate 211. Bottom plate 211 is not necessarily to undertake the weight of rectangular unit cell 100, and such bottom plate 211 can make reduction processing.It is spaced apart the square of setting Insulating layer 217 is equipped between shape single battery 100 and bottom plate 211.As shown in Figure 10, support plate 213, rectangular unit cell 100 The incubation cavity for accommodating insulating layer 217 is limited jointly with bottom plate 211, and the thickness of insulating layer 217 can be substantially equal to support The thickness (Z-direction) of plate 213, insulating layer 217 are used to completely cut off rectangular unit cell 100 and extraneous heat transfer, realize rectangle list The function that body battery 100 is kept the temperature, and avoid rectangular unit cell 100 in the external environment and storing apparatus outside storing apparatus it Between there is a phenomenon where heat interfere.Optionally, insulating layer 217 can by being made with heat-insulated, heat insulation function material, for example, by Heat-preservation cotton is made.
As shown in Fig. 5-Fig. 7 and Figure 10, the first frame 201 and the second frame 202 towards rectangular battery housing unit Inner wall all has the first joint face 215, and the distance of the first joint face 215 to sealing cover 220 is less than supporting surface 213a to sealing The distance of lid 220, rectangular unit cell 100 are connected with the first joint face 215.That is, rectangular unit cell 100 is not only It is supported in side frame 200a by supporting surface 213a, by setting supporting surface 213a and the first joint face 215, side can be reduced The pressure for the rectangular unit cell 100 that frame 200a is born at list, by pressure dissipation to the part for everywhere, preventing side frame 200a Cracking.
First joint face 215 is located at radial outside relative to supporting surface 213a, do not influence in this way rectangular unit cell 100 from The open end on top is packed into pallet.
In actual execution, as shown in Figure 5-Figure 7, the first frame 201 or the second frame 202 hold towards rectangular battery Receive unit inner wall have at least two-stage step, two of them step surface be respectively formed the first joint face 215 and supporting surface 213a, vertical inner wall is connected between the first joint face 215 and supporting surface 213a.The structure of multi-stage stairs formula is convenient for molding, And the structural strength of side frame 200a can be enhanced, and it is interior in a limited space, realize the assembly of rectangular unit cell 100.Insulation Plate can be located at the vertical inner wall between the end face of rectangular unit cell 100 and the first joint face 215 and supporting surface 213a it Between.
As shown in fig. 10 and fig. 12, battery pack 10 further include: end plate, length direction of the rectangular unit cell 100 along itself Both ends be equipped with end plate, rectangular unit cell 100 is connected by end plate with the first joint face 215.Insulation board can be with end plate It is integrally disposed.
As shown in figure 14, end plate includes: header body 207a and the first connecting plate 207b, and header body 207a and rectangular unit are electric The end face in pond 100 is oppositely arranged, and the first connecting plate 207b is connected with header body 207a and to the first joint face 215(side frame It 200a) protrudes, the first connecting plate 207b is connected with the first joint face 215, and the first connecting plate 207b and header body 207a can be with shapes As bent, such as L shape.Certainly, for the battery pack 10 of this multiple field shown in Figure 16, the first connecting plate 207b and end Plate body 207a can be formed as T shape.
For convenience, the end plate for being set to the first end of rectangular unit cell 100 is defined as first end plate 207, it will The second end plate 208 is defined as set on the end plate of the second end of rectangular unit cell 100, first end plate 207 and the second end plate 208 Structure can be identical.The first end of rectangular unit cell 100 is supported on the first frame 201, rectangular unit by first end plate 207 The second end of battery 100 is supported on the second frame 202 by the second end plate 208；First end plate 207, the second end plate 208 and rectangle Single battery 100 forms cell array 400.
In this way, the header body 207a of first end plate 207 is folded in the first end face and the first frame of rectangular unit cell 100 Between 201, the first connecting plate 207b of first end plate 207 is supported in the first joint face 215 of the first frame 201, and with first First joint face 215 of frame 201 is connected；The header body of second end plate 208 is folded in the second end face of rectangular unit cell 100 Between the second frame 202, the first connecting plate of the second end plate 208 is supported in the first joint face 215 of the second frame 202, and It is connected with the first joint face 215 of the second frame 202.
In actual execution, as shown in figure 14, the first connecting plate 207b is equipped with multiple mounting holes, and multiple mounting holes are along the Two directions are spaced apart distribution, and the position for setting mounting hole of the first connecting plate 207b can make widening treatment compared to other regions, First connecting plate 207b can be connected through a screw thread part and be connected in the first joint face 215.
For single battery array 400, first end plate 207 can be one, and the second end plate 208 can be one；Certainly, Also multiple first end plates 207 or the second end plate 208 can be set.
As shown in figs, at least one of two end faces of rectangular unit cell 100 be equipped with explosion-proof valve 103, two The header body 207a of at least one of a end plate (first end plate 207 and the second end plate 208) is equipped with corresponding with explosion-proof valve 103 Via hole 207c, at least one of the first frame 201 and the second frame 202 be equipped with gas vent 221 corresponding with via hole 207c and The exhaust passage 222 being connected to gas vent 221.
In one embodiment, the first end of rectangular unit cell 100 towards the first frame 201 is provided with explosion-proof valve 103, the first frame 201 is internally provided with exhaust passage 222, and exhaust passage 222 can be the interior of the first frame 201 of cavity type Portion's self-assembling formation, position corresponding with the explosion-proof valve 103 of each rectangular unit cell 100 was provided in first end plate 207 Hole 207c, position corresponding with the explosion-proof valve 103 of each rectangular unit cell 100 is provided with gas vent on the first frame 201 221, gas vent 221 is connected to exhaust passage 222, and battery pack case 200 is provided with the exhaust outlet being connected to exhaust passage 222； And/or the second end of rectangular unit cell 100 towards the second frame 202 is provided with explosion-proof valve 103, sets inside the second frame 202 It is equipped with exhaust passage 222, position corresponding with the explosion-proof valve 103 of each rectangular unit cell 100 is respectively provided on the second end plate 208 There is via hole 207c, position corresponding with the explosion-proof valve 103 of each rectangular unit cell 100 is provided with row on the second frame 202 Stomata 221, gas vent 221 are connected to exhaust passage 222, and battery pack case 200 is provided with the exhaust being connected to exhaust passage 222 Mouthful.In other embodiments, the both ends of rectangular unit cell 100 are equipped with explosion-proof valve 103, accordingly, 207 He of first end plate Second end plate 208 is equipped with via hole 207c, and the first frame 201 and the second frame 202 are equipped with gas vent 221 and exhaust passage 222。
In the related art, in the use process of rectangular unit cell 100, if its internal air pressure increases to centainly Degree, then explosion-proof valve 103 is opened, and flame, smog or the gas inside rectangular unit cell 100 can be discharged by explosion-proof valve 103, The flame, smog or gas content are in the inside of battery pack 10, can be to rectangular unit cell 100 if can not be discharged in time Cause secondary injury.However in this application, due to being provided on the first frame 201 and/or the second frame 202 and rectangular unit The corresponding gas vent 221 of explosion-proof valve 103 of battery 100, and the first frame 201 and/or the second frame 202 are internally provided with exhaust Channel 222, when 100 air pressure inside of rectangular unit cell increases, explosion-proof valve 103 is opened, internal flame, smog or gas Body etc. directly will enter the exhaust passage 222 in the first frame 201 and/or the second frame 202 by air inlet, and pass through exhaust The first frame 201 and/or the second frame 202 is discharged in hole 221, for example, being discharged in atmosphere by exhaust outlet, in this way, the flame, cigarette Mist or gas just will not be gathered in inside storing apparatus, so that flame, smog or gas be avoided to cause rectangular unit cell 100 Secondary injury.
As shown in Fig. 3, Figure 12, Figure 15, limit between the first joint face 215 and sealing cover 220 for accommodating cell tube Manage component and the management accommodating chamber with electrical component.In actual execution, the first connecting plate 207b and sealing cover 220 are spaced It opens, management accommodating chamber can be limited by the first connecting plate 207b, side frame 200a, sealing cover 220, in this way, in cell array 400 periphery forms circle management accommodating chamber, which can be used for installing battery management component and distribution member Device makes full use of cell array 400 without being specially battery management component and designing installation space with electrical component Gap after installation reaches the maximization of cell density.
In some embodiments, as shown in figure 3, third frame 203 is electric to the rectangular unit being disposed adjacent with third frame 203 Pond 100 applies the active force towards the 4th frame 204, and the 4th frame 204 is to the rectangular unit being disposed adjacent with the 4th frame 204 Battery 100 applies the active force towards third frame 203, so that multiple rectangular unit cells 100 can be closely along second party To being arranged between third frame 203 and the 4th frame 204, can be bonded to each other between multiple rectangular unit cells 100.This Outside, third frame 203 and the 4th frame 204 can in a second direction limit multiple rectangular unit cells 100, especially It is that can play buffering to rectangular unit cell 100 when rectangular unit cell 100 occurs to expand on a small quantity and inward pressure is provided Effect, prevent 100 swell increment of rectangular unit cell and deflection excessive.Especially when rectangular unit cell 100 be provided with it is anti- When quick-fried valve 103 and current interrupt device (CID) device, square can effectively be limited by third frame 203 and the 4th frame 204 Shape single battery 100 expands so that breaking down and expanding constantly when rectangular unit cell 100, inside can have foot The rotating sheet in explosion-proof valve 103 or current interrupt device (CID) device is broken through in enough air pressures, to make rectangular unit cell 100 Short circuit guarantees the safety of rectangular unit cell 100, prevents rectangular unit cell 100 from exploding.
In some embodiments, between third frame 203 and the rectangular unit cell 100 adjacent with third frame 203 with And the 4th between frame 204 and the rectangular unit cell 100 adjacent with the 4th frame 204 at least one at elastic clip be equipped with elasticity Device.
The first elasticity can be set between third frame 203 and the rectangular unit cell 100 of neighbouring third frame 203 to fill Set and/or the 4th frame 204 and the rectangular unit cell 100 of neighbouring 4th frame 204 between the second elasticity can be set filled It sets.First elastic device may be mounted on third frame 203, and the second elastic device may be mounted on the 4th frame 204, lead to Crossing the first elastic device and the second elastic device makes multiple rectangular unit cells 100 closely arrange, in this way, can make The quantity for the rectangular unit cell 100 arranged between three frames 203 and the 4th frame 204 can not change third frame 203 In the case where spacing between the 4th frame 204, by changing the first elastic device and the second elastic device and third frame 203 and the 4th mounting distance between frame 204 adjust.
In some embodiments, as shown in figure 12, battery pack 10 further include: side plate, third frame 203 and with third frame Between 203 adjacent rectangular unit cells 100 and the 4th frame 204 and the rectangular unit cell adjacent with the 4th frame 204 Side plate is equipped between 100.Elastic device can be integrally disposed with side plate, side plate can for rubber system at.
As shown in figure 13, side plate includes side plate body 209a and the second connecting plate 209b, and side plate body 209a and rectangular unit are electric The side in pond 100 is oppositely arranged, and the second connecting plate 209b is connected with side plate body 209a and to third frame 203 or the 4th frame 204 protrusions, third frame 203 and the 4th frame 204 are equipped with the second joint face 216 towards sealing cover 220, the second connecting plate 209b is connected with the second joint face 216.Second connecting plate 209b and side plate body 209a can be formed as bent, such as L shape, T Shape.
For convenience, the side plate being set between rectangular unit cell 100 and third frame 203 is defined as the first side The side plate for being set to the second end of rectangular unit cell 100 is defined as the second side plate 210, the first side plate 209, second side by plate 209 The structure of plate 210 can be identical.First end plate 207, the second end plate 208, the first side plate 209, the second side plate 210 and rectangular unit Battery 100 forms cell array 400.The surrounding of rectangular unit cells 100 multiple so passes through end plate or side plate clamping, so that Cell array 400 basically forms as an entirety.
In this way, the side plate body 209a of the first side plate 209 is folded in side and the third frame 203 of rectangular unit cell 100 Between, the second connecting plate 209b of the first side plate 209 is supported in the second joint face 216 of third frame 203, and with third frame 203 the second joint face 216 is connected；The side plate body of second side plate 210 is folded in the side and the 4th side of rectangular unit cell 100 Between frame 204, the second connecting plate of the second side plate 210 is supported in the second joint face 216 of the 4th frame 204, and with the 4th side Second joint face 216 of frame 204 is connected.
As shown in figure 12, two surfaces of the third direction of rectangular unit cell 100 can be equipped with panel 212, end plate Upper end and the upper end of side plate and the panel 212 of top be connected, 212 phase of panel of the lower end and lower section of the lower end and side plate of end plate Even, first end plate 207, the second end plate 208, the first side plate 209, the second side plate 210, panel 212 and 100 groups of rectangular unit cell At cell array 400, keep six faces of rectangular unit cell 100 clamped.
In one embodiment, as shown in figure 3, multiple rectangular unit cells 100 can be directly installed on outside battery pack In shell 200, the first end and second end of rectangular unit cell 100 can be respectively supported at the first frame 201 and the second frame 202 On.
In another embodiment, as shown in Figure 15-Figure 19, multiple rectangular unit cells 100 can also be first assembled into Cell array 400, is then mounted in battery pack case 200 by least one cell array 400 again.In this way based on the application's Technical concept equally can by the external structure of cell array 400 and the matching relationship of the first frame 201, the second frame 202 Realize the technical effect of the application.
In some embodiments, as shown in figure 12, battery pack 10 includes: panel 212, end plate, side plate, multiple rectangular units Battery 100, battery pack case 200, multiple rectangular unit cells 100 are arranged side by side, and 100 arrangement mode of rectangular unit cell can be with With reference to the description of above-described embodiment, the upper and lower surfaces of rectangular unit cell 100 are connected with panel 212, rectangular unit Two end faces of battery 100 are equipped with end plate, and the lateral surface of outermost two rectangular unit cells 100 is equipped with side plate；Its End plates and side plate are connected with two panels 212, and accommodating towards rectangular battery for the side frame 200a of battery pack case 200 is single The inner wall of member has supporting surface 213a and joint face (the first joint face 215 and the second joint face 216), rectangular unit cell 100 both ends are supported in supporting surface 213a, and end plate and side plate are connected with joint face.
The rectangular unit cell 100 of multiple strips is not easy to form stable structure when being assembled to battery pack case 200 Cell array 400, by panel 212, end plate, side plate from six inward-facing extruding, so that the globality of cell array 400 It is more stable, convenient for assembly.
In some embodiments, panel 212, panel 212 and first end are at least partly provided with below rectangular unit cell 100 Plate 207 connects, and panel 212 is connect with the second end plate 208；Panel 212, first end plate 207, the second end plate 208 at least partly Rectangular unit cell 100 forms cell array 400.In other words, face is provided with below at least partly multiple rectangular unit cells 100 Plate 212, panel 212 are connect with first end plate 207, and panel 212 is connect with the second end plate 208；Panel 212, first end plate 207, Second end plate 208 forms cell array 400 at least partly multiple rectangular unit cells 100.In other words, panel 212 can be One, first end plate 207 is connect with the second end plate 208 with the panel 212, first end plate 207, the second end plate 208, panel 212 It constitutes the accommodation space for accommodating multiple rectangular unit cells 100, when installation, multiple rectangular unit cells 100 is arranged in the appearance After receiving in space, then first end plate 207 and the second end plate 208 be supported on the first frame 201 and the second frame 202.Panel 212 or multiple, to constitute multiple cell arrays 400, Duo Ge electricity with multiple first end plates 207 and the second end plate 208 Pond array 400 is mounted in battery pack case 200.
In some embodiments, panel 212, panel 212 and first end are at least partly provided with above rectangular unit cell 100 Plate 207 connects, and panel 212 is connect with the second end plate 208；The panel 212 of top, the panel 212 of lower section, first end plate 207, Two end plates 208 form cell array 400 at least partly rectangular unit cell 100.In other words, at least partly multiple rectangular units Panel 212 is provided with above battery 100, panel 212 is connect with first end plate 207, and panel 212 is connect with the second end plate 208；On The panel 212 of side, the panel 212 of lower section, first end plate 207, the second end plate 208 and at least partly multiple rectangular unit cells 100 composition cell arrays 400.In other words, panel 212 is located at the top of first end plate 207 and the second end plate 208, and panel 212 In the bottom of first end plate 207 and the second end plate 208, rectangular unit cell 100 between panel 212 and panel 212, this Sample, panel 212 and panel 212 can prevent about 100 play of rectangular unit cell, increase the steady of rectangular unit cell 100 It is qualitative.
In some embodiments, battery pack case 200, which has, is relatively set with the along the second direction for being different from first direction Three frames 203 and the 4th frame 204, the rectangular unit cell 100 of neighbouring third frame 203 is towards the side of third frame 203 It is provided with the first side plate 209, the side of rectangular unit cell 100 towards the 4th frame 204 of neighbouring 4th frame 204 is provided with Second side plate 210, first end plate 207, the second end plate 208, the first side plate 209, the second side plate 210, top panel 212, under The panel 212 of side and at least partly multiple rectangular unit cells 100 form cell array 400.Cell array 400 can be one It is a, or multiple, first end plate 207, the second end plate 208, the first side plate 209, the second side plate 210 can be set in panel 212 and panel 212 surrounding, first end plate 207 is fixed on the first frame 201, and the second end plate 208 is fixed on the second frame On 202, the first side plate 209 is fixed on third frame 203, and the second side plate 210 is fixed on the 4th frame 204, first end plate 207, the second end plate 208, the first side plate 209, the second side plate 210, the panel 212 of top, lower section panel 212 limit jointly For accommodating the closed accommodation space of multiple rectangular unit cells 100, in this way, being risen when rectangular unit cell 100 breaks down Fiery explosion time, first end plate 207, the second end plate 208, the first side plate 209, the second side plate 210, panel 212 and panel 212 can It is surrounding in a certain range, to prevent the Fault Control of rectangular unit cell 100 explosion of rectangular unit cell 100 to influence Component.Optionally, which can be the first elastic buffer plate mentioned above, which can be upper The second elastic buffer plate that text refers to, so that the first side plate 209 and the second side plate 210 have the multiple rectangular unit cells of limitation The function of 100 dilatancies, so that it is guaranteed that the starting of explosion-proof valve 103 and/or current interrupt device (CID).
In another embodiment, it is at least partly set below rectangular unit cell 100 in multiple rectangular unit cells 100 It is equipped with panel 212, at least partly rectangular unit cell 100 is supported on the first frame 201 and the second frame 202 by panel 212； Panel 212 forms cell array 400 at least partly rectangular unit cell 100.In other words, at least partly multiple rectangular unit electricity Panel 212 is provided with below pond 100, each rectangular unit cell 100 is supported on the first frame 201 and second by panel 212 Frame 202；Panel 212 forms cell array 400 at least partly multiple rectangular unit cells 100, in this embodiment, more A rectangular unit cell 100 is supported on the first frame 201 and the second frame 202 by panel 212, simplifies cell array 400 structure, conducive to the lightweight for realizing battery pack 10.
In the related art, since the size of rectangular unit cell 100 is smaller, length is shorter, rectangular unit cell 100 Opposite end can not be adapted with two side bars being oppositely arranged in battery pack case 200, therefore, be needed in battery pack case 200 Crossbeam and/or stringer (as shown in the figure) are set, consequently facilitating the assembly of rectangular unit cell 100.When rectangular unit cell 100 After being installed in battery pack case 200 by cell array 400, the first direction along battery pack case 200 can have multiple squares Shape single battery 100, that is to say, that rectangular unit cell 100 is not in two side bars being oppositely arranged (201 He of the first frame Second frame 202 or the first side wall and second sidewall) between the crossbeam or stringer that extend, but be oppositely arranged at two it Between extend, cell array 400 fixed by fastener and adjacent crossbeam and/or stringer.
In the application, as shown in Fig. 2, the length of rectangular unit cell 100 is L, it is highly H, with a thickness of D, wherein 4≤L/ H≤21, preferably 4≤L/H≤20；23≤L/D≤208, preferably 23≤L/D≤200.That is, the rectangular unit of the application The size of the length direction of battery 100 is much larger than short transverse and the size of thickness direction, the rectangular unit cell 100 of strip The second frame 202 can be extended to from the first frame 201.
In actual execution, when battery pack 10 as the offer electric energy used on vehicle 1 battery pack 10 in use, can So that the length direction of rectangular unit cell 100 is the width direction of vehicle 1, that is, the left and right directions of vehicle 1, in some implementations In example, the length L of rectangular unit cell 100 meets: 600mm≤L≤2500mm, preferably 600mm≤L≤1000mm, so that square The length of shape single battery 100 can be adapted with the width of vehicle 1.
In the embodiment shown in Fig. 2, Fig. 4, Figure 12, Figure 17-Figure 19, two adjacent rectangular unit cells 100 can be with It is bonded for the side face of length * height, it is highly H that the volume of rectangular unit cell 100, which is V, is met: 0.0001mm-2≤H/ V≤0.00015mm-2。
It is understood that H/V is smaller, and L*D is bigger in mono- timing of V, and in above-described embodiment, rectangular unit cell 100 It relies primarily on length * thickness face to radiate, increases L*D value, the heat dissipation effect of rectangular unit cell 100 can be enhanced, prevent Heat accumulation.
In some embodiments, the length direction of rectangular unit cell 100 and the first frame 201 and the second frame 202 hang down Directly, there are many arrangement of the cell array 400 that multiple rectangular unit cells 100 are formed in pallet, is described below several Embodiment.
In the embodiment shown in Fig. 3 and Figure 12, the distance between the first end of rectangular unit cell 100 and second end are The distance between inner wall of L, the inner wall of the first frame 201 and the second frame 202 is L2, and wherein the ratio of L and L2 meets L/L2≥50%.In other words, along first direction, a rectangular unit is only arranged between the first frame 201 and the second frame 202 Battery 100 so arranges the relationship of distance between rectangular unit cell 100 and two frames by a first direction, can be with Play the purpose by rectangular unit cell 100 as crossbeam.Wherein in illustrative embodiments provided by the present application, pass through Along first direction, a rectangular unit cell 100 is only arranged between the first frame 201 and the second frame 202 along first direction, with Make rectangular unit cell 100 in itself and can be used as the crossbeam use for reinforcing 200 structural strength of battery pack case.
In some embodiments, the ratio of L and L2 can satisfy 80%≤L/L2≤97%, so that rectangular unit cell 100 First end and second end be positioned as close to the first frame 201 and the second frame 202, or even with the first frame 201 and second Frame 202 is supported, and in order to realize dispersion, the conduction of power by the structure of rectangular unit cell 100 itself, guarantees rectangle list The crossbeam that body battery 100 may be used as reinforcing 200 structural strength of battery pack case uses, and guarantees that battery pack case 200 has foot Enough intensity resists external force deformation.
Wherein, in the embodiment shown in Fig. 3 and Figure 12, a cell array 400 is set in entire pallet, it in this way can be with Realize the Mi Dui to the full extent of rectangular unit cell 100.
In some embodiments, as shown in figure 18, first crossbeam 700, first crossbeam are provided in battery pack case 200 700 along battery pack case 200 first direction extend；First crossbeam 700 will be divided into two rectangle electricity inside battery pack case 200 Pond housing unit.
In the embodiment shown in Figure 18, entire battery pack case 200 is provided with two batteries being distributed in a second direction Array 400, each rectangular battery housing unit are arranged a cell array 400, and there are certain between adjacent cell array 400 Gap.Such as in embodiment shown in figure 15, battery pack 10 includes three cell arrays 400 being distributed in a second direction, than In embodiment as shown in figure 18, battery pack 10 includes two cell arrays 400 being distributed in a second direction.
It is understood that when the size of battery pack 10 in a second direction is too big, by the way that multiple cell arrays are arranged 400, it can be in order to assemble, and error accumulation in a second direction when reducing assembly, and reserve in a second direction certain swollen Swollen space.
In other possible embodiments, under the design of the application, in a first direction, can also be arranged two or More than two rectangular unit cells 100 also can at least play the effect for making full use of the space of battery pack case 200.
In some embodiments, as shown in figure 17, second cross beam 800, second cross beam are provided in battery pack case 200 800 along battery pack case 200 second direction extend；Second cross beam 800 will be divided into two batteries and hold inside battery pack case 200 Receive unit.
As shown in figure 17, entire battery pack case 200 is provided with two cell arrays 400 along first direction distribution, often A rectangular battery housing unit is arranged a cell array 400, and there are certain gaps between adjacent cell array 400.
It is understood that when battery pack 10 is too big along the size of first direction, by the way that multiple cell arrays are arranged 400, it can be in order to assemble, and certain expansion space is reserved in a first direction, and can shorten rectangular unit cell 100 Length, convenient for the manufacture of rectangular unit cell 100.
In some embodiments, as shown in figure 19, first crossbeam 700 and second cross beam are provided in battery pack case 200 800, first crossbeam 700 along battery pack case 200 first direction extend, second cross beam 800 along battery pack case 200 second Direction extends, and first crossbeam 700 and second cross beam 800 are arranged in a crossed manner, and first crossbeam 700 and second cross beam 800 will be outside battery packs It is divided into four battery housing units inside shell 200.
As shown in figure 19, entire battery pack case 200 is provided with two cell arrays 400 along first direction distribution, and Including two cell arrays 400 being distributed in a second direction, a cell array 400 is arranged in each rectangular battery housing unit. In the embodiment shown in Figure 19, battery pack 10 includes 4 cell arrays 400 of 2X2, rectangular unit cell 100 each in this way Length can design it is relatively less long, convenient for the manufacture of rectangular unit cell 100, and when reducing assembly in a second direction Error accumulation, and certain expansion space is reserved in a first direction and in second direction.
In the embodiment shown in Figure 16, battery pack 10 vertically (Z-direction) is disposed with a rectangular unit electricity at least more than two layers Pond 100.In other words, multiple rectangular unit cells 100 be placed along third direction (third direction is vertical with first direction, and with Second direction is vertical) multilayer of stacking, multiple rectangular unit cells 100 in every layer are respectively positioned on the first frame 201 and the second side Between frame 202, the number of plies of rectangular unit cell 100 can be configured according to the size of battery pack case 200.In this way, in electricity Pond incrustation 200 can arrange multiple rectangular unit cells 100 in limited space as much as possible, to further improve The volume utilization of battery pack case 200 improves capacity, voltage and the cruising ability of battery pack 10.In this way, when vehicle is in third When direction has sufficiently high space, more rectangular unit cells 100 can be arranged, and the arrangement can shorten rectangle Single battery 100 radiates in the size of short transverse convenient for rectangular unit cell 100.
In the above-described embodiments, the rectangular unit cell 100 being stacked along third direction, can be both ends and the first frame 201 and second frame 202 cooperate rectangular unit cell 100, be also possible to be directly placed at next layer of rectangular unit cell 100 Top is without supporting or connecting with the first frame 201 and the cooperation of the second frame 202.
In a kind of embodiment provided by the present application, first direction can be vertical with second direction, and first direction is every The length direction of a rectangular unit cell 100, second direction are the length direction of the first frame 201 and the second frame 202, i.e., often The thickness direction of a rectangular unit cell 100.That is, the first frame 201 and the second frame 202 and rectangular unit cell 100 is vertical, and the both ends on the length direction of each rectangular unit cell 100 are supported on the first frame 201 and the second frame 202 On.In this way, when the first frame 201 and/or the second frame 202 receive external impacts, multiple rectangular unit cells 100 can be into The conduction and dispersion of row power improve battery pack case 200 and resist external force deformation to better play the effect of reinforcement structure Ability.In the present embodiment, as shown in Fig. 3, Fig. 5, Fig. 6, Fig. 7, Figure 15-Figure 19, the first frame 201 and the second frame 202 For linear structure, second direction is rectilinear direction, in some possible embodiments, the first frame 201 and the second frame 202 It can be curvilinear structures, first direction is also possible to circumferencial direction at this time, and corresponding second direction is then radial direction.
In some embodiments of the present application, battery pack 10 further include: heat exchanger plates 219, heat exchanger plates 219 are installed on rectangle list The upper surface of body battery 100.
For in cell array 400 including the embodiment of heat exchanger plates 219, as shown in figure 11, heat exchanger plates 219 and square Heat-conducting plate 218 can be set between shape single battery 100, in favor of single battery heat dissipation, and guarantee multiple rectangular unit cells Temperature difference between 100 is not too big.Heat-conducting plate 218 can be made of the good material of thermal conductivity, for example, heat-conducting plate 218 can be with There are the materials such as copper or the aluminium that thermal coefficient is high to be made.
In one embodiment, as shown in figure 12, for including the embodiment of panel 212 in cell array 400 and Speech, heat exchanger plates 219 can be integrally disposed with the panel 212 of top, and heat exchanger plates 219 can be liquid-cooled, and the panel 212 of top is It is internally provided with cooling duct, cooling duct is internally provided with coolant liquid, to realized by coolant liquid to rectangular unit electricity The cooling in pond 100 makes rectangular unit cell 100 be at suitable operating temperature.Due to heat exchanger plates 219 and rectangular unit electricity Pond 100 is provided with heat-conducting plate 218, when being cooled down by coolant liquid to rectangular unit cell 100,219 each position of heat exchanger plates The temperature difference at place can carry out equilibrium by heat-conducting plate 218, so that the temperature difference control between multiple rectangular unit cells 100 be existed Within 1 DEG C.
It can be arranged as shown in Figures 17 to 19 in the upstream of heat exchanger plates 219 to improve the cooling effect of heat exchanger plates 219 Gas-liquid separator 223, since the coolant liquid in heat exchanger plates 219 may be from other heat management circuits of vehicle, coolant liquid may The coolant liquid mixed for gaseous state and liquid can after so that the coolant liquid of gas-liquid mixed is carried out gas-liquid separation by gas-liquid separator 223 Rectangular unit cell 100 is cooled down with guaranteeing that the coolant liquid of pure liquid phase enters heat exchanger plates 219, guarantees cooling effect.
Heat exchanger plates 219 can have any suitable structure.In one embodiment, as shown in figure 22, heat exchanger plates 219 Inside can have a plurality of coolant duct 224, every coolant duct 224 is formed as U-shaped structure, with have be located at it is ipsilateral cold But liquid entrance 225 and cooling liquid outlet 226,226 edge of coolant inlet 225 and cooling liquid outlet of a plurality of coolant duct 224 The orientation of a plurality of coolant duct 224 is successively spaced setting, and battery pack further includes feed liquor house steward 227 and liquid outlet 228, Each coolant inlet 225 is connected to feed liquor house steward 227, and each cooling liquid outlet 226 is connected to liquid outlet 228.
In another embodiment, as shown in figure 23 and figure 24, there is a plurality of coolant duct 224 in heat exchanger plates 219, A plurality of coolant duct 224 is straight tube road and is alternatively arranged in parallel to each other that the both ends of each coolant duct 224 are respectively provided with The coolant inlet 225 and cooling liquid outlet 226 being oppositely arranged, the coolant inlet 225 and cooling of a plurality of coolant duct 224 Liquid outlet 226 is successively spaced setting along the orientation of a plurality of coolant duct 224, and battery pack further includes 227 He of feed liquor house steward Liquid outlet 228, each coolant inlet 225 are connected to feed liquor house steward 227, each cooling liquid outlet 226 and liquid outlet 228 Connection.As shown in figure 23 and figure 24,227 road of feed liquor house steward is provided with coolant liquid main entrance 229, is arranged on liquid outlet 228 There is coolant liquid general export 230, coolant liquid main entrance 229 and coolant liquid general export 230 are located at the ipsilateral or opposite side of heat exchanger plates 219.
The cooling of rectangular unit cell 100 can also be cooled down by refrigerant, in another implementation that the disclosure provides In mode, panel 212 is the direct-cooled plate for being internally provided with cooling structure, and direct-cooled intralamellar part is provided with refrigerant, which can be Refrigerant after carrying out radiating and cooling via vehicle air conditioner, low temperature refrigerant can effectively absorb rectangular unit cell 100 Heat makes the temperature of rectangular unit cell 100 remain at suitable temperature value.Wherein the pipeline in direct-cooled plate and above-mentioned change Hot plate 219 can have identical can also be different.
To sum up, when battery pack size is greater than 600mm, compared with the existing technology, the application can set the size of single battery Haggle over length, longest can arrive 2500mm, the size of the single battery size and battery pack matched brought technical effect:
1. the volume utilization of battery pack significantly improves, the volume energy density of battery pack is improved: the current volume of industry utilizes Rate is 40% or so, and our design battery, volume utilization can be increased to 60% or more on whole cloth inside the battery pack, Even up to 80%, volume energy density promotes 20% or more.Same vehicle uses battery and arrangement of the invention, energy 20%-30% can be promoted, the milimeter number that vehicle can be run can also promote 20%-30%.
2., the cost of battery pack significantly reduces: single battery itself can undertake mechanical booster action, can save or subtract The reinforcing rib of few battery tray, the manufacturing process of battery pack is simple, and manufacturing cost reduces；The single battery size of the application simultaneously It can be matched with the size of battery pack, single battery can be directly arranged in parallel in battery pack, without as in the prior art, it is necessary to First multiple single batteries are arranged in parallel at and is enclosed and is set in the module framework formed by two end plates and two side plates, then by battery mould Group is assembled into battery pack, and the single battery size of the application is enough long, multiple single batteries directly can be arranged in parallel at battery pack In, it eliminates or reduces the end plate used of assembled battery mould group, side plate and be largely used to that battery modules are fixedly mounted The fasteners such as screw, the packaging technology of single battery is more simple, save a large amount of human and material resources manufacturing costs such as also, More conducively electric vehicle is universal.
3., battery pack stability, reliability increase: battery pack packaging technology it is more complicated, the probability for generating fraction defective is got over Height, battery pack occur loosening, install unstable possibility and also will increase, and cause adverse effect, battery to the quality of battery pack The stability of packet declines, and reliability reduces.Battery pack is assembled into using the single battery of the application, since packaging technology becomes more Add simply, battery pack stability and reliability increase, and the fraction defective of battery pack reduces.
4. the heat dissipation security performance of battery pack significantly improves: the temperature rise of battery pack is by heat production and the coefficient knot that radiates Fruit, under the premise of identical capacity, for the quantity of heat production of single battery at definite value, monomer is substantially carried out prolate design by the application, The heat dissipation effect of single battery is more preferable, the temperature rise decline of single battery, under the premise of battery pack operating condition is certain, using the monomer Battery, the temperature rise decline of battery pack, thus the security performance of battery pack also greatly improves.
Based on the significant technical effect of the longer bring of the above single battery, to realize bearing of the single battery to itself, The improvement of can be designed by moulding process, structure etc. improves the bearing strength of shell, while the length-width ratio of shell being controlled Within a predetermined range.Meanwhile the internal resistance of single battery can be reduced by modes such as the optimizations of collection flow path.In addition, can also be aided with The improvement of liquid injection process solves the problems, such as that the single battery longer dimension bring fluid injection time is longer.
It is said below by comparative example 1 and embodiment 1-3, comparative example 2 and embodiment 4-5 and comparative example 3 and embodiment 6-7 It is bright, according to the battery pack 10 of the embodiment of the present application, by the design of arrangement and dimensional parameters etc. to rectangular unit cell 100, In terms of promotion.
Comparative example 1
Battery pack 10 in the related technology, as shown in Figure 1, there are two crossbeam 500 and a stringers for setting in battery pack case 200 600, rectangular unit cell 100 is separated into six battery modules 400, each battery mould by two crossbeams 500 and a stringer 600 Group 400 all has curb girder and end carriage.
The total volume of battery pack 10 is 213L, the sum of volume of rectangular unit cell 100 of the battery pack 10 and battery pack The ratio between 10 volume is that 54.76%(, that is, space utilization rate is that 54.76%), the energy density of the battery pack 10 is 251Wh/L.
Embodiment 1
According to the battery pack 10 of the embodiment of the present application, as shown in figure 19, the length direction of rectangular unit cell 100 is along battery pack 10 Width direction arrangement, multiple rectangular unit cells 100 along battery pack 10 length direction arrange, in the width side of battery pack 10 Upwards, battery pack case 200 accommodates two rectangular unit cells 100.A first crossbeam is provided in battery pack case 200 700 and a second cross beam 800, first crossbeam 700 extends along the width direction of battery pack 10, multiple rectangular unit cells 100 It arranges to form cell array 400 along the length direction of battery pack 10, first crossbeam 700 is by cell array 400 along battery pack 10 Length direction is divided into two parts.Also, multiple rectangular unit cells 100 are disposed with two rows in the width direction of battery pack 10 Cell array 400, second cross beam 800 are located between adjacent two rows of cell arrays 400.Battery pack case 200 is located at battery pack The first frame 201 and the second frame 202 of 10 width direction two sides are that rectangular unit cell 100 provides support force, outside battery pack Shell 200 positioned at the third frame 203 at 10 length direction both ends of battery pack and the 4th frame 204 be neighbouring rectangular unit cell 100 provide inside pressing force.Short transverse in battery pack case 200 along battery pack 10 contains two layers of cell array 400.It should The cell array 400(of battery pack 10 also is understood as battery modules) it is not provided with end carriage and curb girder.
In the present embodiment, the ratio between the sum of volume of rectangular unit cell 100 of battery pack 10 and the volume of battery pack 10 It is that 57.39%), the energy density of the battery pack 10 is 252Wh/L for 57.39%(, that is, space utilization rate.
Embodiment 2
According to the battery pack 10 of the embodiment of the present application, as shown in figure 18, the length direction of rectangular unit cell 100 is along battery pack 10 Width direction arrangement, multiple rectangular unit cells 100 along battery pack 10 length direction arrange, in the width side of battery pack 10 Upwards, battery pack case 200 accommodates a rectangular unit cell 100, width direction of the rectangular unit cell 100 in battery pack 10 On from the side of battery pack case 200 extend to the other side.It is provided with a first crossbeam 700 in battery pack case 200, does not set Set second cross beam 800, first crossbeam 700 extends along the width direction of battery pack 10, and multiple rectangular unit cells 100 are along battery pack 10 length direction arranges to form cell array 400, and first crossbeam 700 is by cell array 400 along the length direction of battery pack 10 It is divided into two parts.The first frame 201 and the second frame positioned at 10 width direction two sides of battery pack of battery pack case 200 202 provide support force, the third positioned at 10 length direction both ends of battery pack of battery pack case 200 for rectangular unit cell 100 Frame 203 and the 4th frame 204 are that neighbouring rectangular unit cell 100 provides inside pressing force.Edge in battery pack case 200 The short transverse of battery pack 10 contains two layers of cell array 400.The cell array 400(of the battery pack 10 also is understood as battery Mould group) it is not provided with end carriage and curb girder.
In the present embodiment, the ratio between the sum of volume of rectangular unit cell 100 of battery pack 10 and the volume of battery pack 10 It is that 59.70%), the energy density of the battery pack 10 is 268Wh/L for 59.70%(, that is, space utilization rate.
Embodiment 3
According to the battery pack 10 of the embodiment of the present application, as shown in figure 20, the length direction of rectangular unit cell 100 is along battery pack 10 Width direction arrangement, multiple rectangular unit cells 100 along battery pack 10 length direction arrange, in the width side of battery pack 10 Upwards, battery pack case 200 accommodates a rectangular unit cell 100, width direction of the rectangular unit cell 100 in battery pack 10 On from the side of battery pack case 200 extend to the other side.First crossbeam 700 and the second cross are not provided in battery pack case 200 Beam 800.Battery pack case 200 positioned at the first frame 201 of 10 width direction two sides of battery pack and the second frame 202 be rectangle Single battery 100 provides support force, 203 He of third frame positioned at 10 length direction both ends of battery pack of battery pack case 200 4th frame 204 is that neighbouring rectangular unit cell 100 provides inside pressing force.Along battery pack 10 in battery pack case 200 Short transverse contain two layers of cell array 400.The cell array 400(of the battery pack 10 also is understood as battery modules) it does not set Set end carriage and curb girder.
In the present embodiment, the ratio between the sum of volume of rectangular unit cell 100 of battery pack 10 and the volume of battery pack 10 It is that 62.41%), the energy density of the battery pack 10 is 280Wh/L for 62.41%(, that is, space utilization rate.
Those skilled in the art is by comparing above-mentioned comparative example 1 with embodiment 1-3 it is found that comparing electricity in the related technology Pond packet 10 passes through the arrangement of rectangular unit cell 100, dimensional parameters and other according to the battery pack 10 of the embodiment of the present application The design of factor, rate can break through the limitation of existing battery pack 10 in groups, to realize higher energy density.
Comparative example 2
Battery pack 10 in the related technology, as shown in Figure 1, there are two crossbeam 500 and a stringers for setting in battery pack case 200 600, rectangular unit cell 100 is separated into six battery modules 400, each battery mould by two crossbeams 500 and a stringer 600 Group 400 all has curb girder and end carriage.
The total volume of battery pack 10 is 310L, the sum of volume of rectangular unit cell 100 of battery pack 10 and battery pack 10 The ratio between volume be 53.49%(, that is, space utilization rate be that 53.49%), the energy density of the battery pack 10 is 245Wh/L.
Embodiment 4
According to the battery pack 10 of the embodiment of the present application, as shown in figure 17, the length direction of rectangular unit cell 100 is along battery pack 10 Width direction arrangement, multiple rectangular unit cells 100 along battery pack 10 length direction arrange, in the length side of battery pack 10 Upwards, battery pack case 200 accommodates a rectangular unit cell 100, length direction of the rectangular unit cell 100 in battery pack 10 On from the side of battery pack case 200 extend to the other side.It is provided with a second cross beam 800 in battery pack case 200, does not set Crossbeam 500 is set, second cross beam 800 extends along the length direction of battery pack 10, and multiple rectangular unit cells 100 are along battery pack 10 Width direction arranges to form cell array 400, and width direction of the second cross beam 800 by cell array 400 along battery pack 10 is divided At two parts.Battery pack case 200 is positioned at the third frame 203 at 10 length direction both ends of battery pack and the 4th frame 204 Rectangular unit cell 100 provides support force, the first frame positioned at 10 width direction two sides of battery pack of battery pack case 200 201 and second frame 202 be neighbouring rectangular unit cell 100 inside pressing force is provided.Along battery in battery pack case 200 The short transverse of packet 10 contains two layers of cell array 400.The cell array 400(of the battery pack 10 also is understood as battery modules) It is not provided with end carriage and curb girder.
In the present embodiment, the ratio between the sum of volume of rectangular unit cell 100 of battery pack 10 and the volume of battery pack 10 It is that 59.25%), the energy density of the battery pack 10 is 266Wh/L for 59.25%(, that is, space utilization rate.
Embodiment 5
According to the battery pack 10 of the embodiment of the present application, as shown in figure 21, the length direction of rectangular unit cell 100 is along battery pack 10 Length direction arrangement, multiple rectangular unit cells 100 along battery pack 10 width direction arrange, in the length side of battery pack 10 Upwards, battery pack case 200 accommodates a rectangular unit cell 100, length direction of the rectangular unit cell 100 in battery pack 10 On from the side of battery pack case 200 extend to the other side.Crossbeam and stringer are not provided in battery pack case 200.Outside battery pack Shell 200 is that rectangular unit cell 100 mentions positioned at the third frame 203 at 10 length direction both ends of battery pack and the 4th frame 204 For support force, battery pack case 200 is positioned at the first frame 201 of 10 width direction two sides of battery pack and the second frame 202 Neighbouring rectangular unit cell 100 provides inside pressing force.Short transverse in battery pack case 200 along battery pack 10 contains Two layers of cell array 400.The cell array 400(of the battery pack 10 also is understood as battery modules) it is not provided with end carriage and curb girder.
In the present embodiment, the ratio between the sum of volume of rectangular unit cell 100 of battery pack 10 and the volume of battery pack 10 It is that 61.23%), the energy density of the battery pack 10 is 275Wh/L for 61.23%(, that is, space utilization rate.
Comparative example 3
Battery pack 10 in the related technology, as shown in Figure 1, there are two crossbeam 500 and a stringers for setting in battery pack case 200 600, single battery 100 is separated into six battery modules 400, each battery modules by two crossbeams 500 and a stringer 600 400 all have curb girder and end carriage.
The ratio between the sum of volume of single battery 100 of the battery pack 10 and the volume of battery pack 10 are 60.23%(, that is, space Utilization rate is that 60.23%), the energy density of the battery pack 10 is 276Wh/L.
Embodiment 6
According to the battery pack 10 of the embodiment of the present application, as shown in figure 21, the length of the length direction of single battery 100 along battery pack 10 Direction arrangement is spent, multiple single batteries 100 are arranged along the width direction of battery pack 10, on the length direction of battery pack 10, electricity Pond incrustation 200 accommodates a single battery 100, and single battery 100 is on the length direction of battery pack 10 from battery pack case 200 side extends to the other side.Crossbeam and stringer are not provided in battery pack case 200.Battery pack case 200 is located at battery The third frame 203 and the 4th frame 204 for wrapping 10 length direction both ends are that single battery 100 provides support force, battery pack case 200 positioned at the first frame 201 of 10 width direction two sides of battery pack and the second frame 202 be that neighbouring single battery 100 mentions For inside pressing force.Short transverse in battery pack case 200 along battery pack 10 contains two layers of cell array 400.The battery The cell array 400(of packet 10 also is understood as battery modules) it is not provided with end carriage and curb girder.
In the present embodiment, the ratio between the sum of volume of single battery 100 of battery pack 10 and the volume of battery pack 10 are 72.39%(, that is, space utilization rate is that 72.39%), the energy density of the battery pack 10 is 326Wh/L.
Embodiment 7
According to the battery pack 10 of the embodiment of the present application, as shown in figure 21, the length of the length direction of single battery 100 along battery pack 10 Direction arrangement is spent, multiple single batteries 100 are arranged along the width direction of battery pack 10, on the length direction of battery pack 10, electricity Pond incrustation 200 accommodates a single battery 100, and single battery 100 is on the length direction of battery pack 10 from battery pack case 200 side extends to the other side.Crossbeam and stringer are not provided in battery pack case 200.Battery pack case 200 is located at battery The third frame 203 and the 4th frame 204 for wrapping 10 length direction both ends are that single battery 100 provides support force, battery pack case 200 positioned at the first frame 201 of 10 width direction two sides of battery pack and the second frame 202 be that neighbouring single battery 100 mentions For inside pressing force.Short transverse in battery pack case 200 along battery pack 10 contains two layers of cell array 400.The battery The cell array 400(of packet 10 also is understood as battery modules) it is not provided with end carriage and curb girder.
In the present embodiment, the ratio between the sum of volume of single battery 100 of battery pack 10 and the volume of battery pack 10 are 73.66%(, that is, space utilization rate is that 73.66%), the energy density of the battery pack 10 is 332Wh/L.
The design parameter such as table 1 of embodiment 1-7, comparative example 1-3.
Wherein, the enclosure volumes such as pallet and upper cover and volume shared by internal cell management system and other Power entry modules is total With an only general valuation may be slightly different with exact value, but population differences are little, in acceptable error model In enclosing, it will not have much impact to result.
In comparative example 1 and embodiment 1-3
Power battery pack total volume: 213L (1380*1005*137*0.000001+22.5)；Length=1380mm of backpack body, width =1005 mm, thickness=137mm；Shared by the enclosure volumes such as pallet and upper cover and internal cell management system and other Power entry modules The summation of volume: 58L；Real surplus can accommodate the volume of single battery and/or crossbeam or stringer: 155L.
Comparative example 2 is in embodiment 4,5
Power battery pack total volume: length=1580 mm of 310L (=1580*1380*137*0.000001+11) backpack body, width= 1380 mm, thickness=137 mm；Shared by the enclosure volumes such as pallet and upper cover and internal cell management system and other Power entry modules The summation of volume: 89L；Real surplus can accommodate the volume of single battery and/or crossbeam or stringer: 221L.
In comparative example 3 and embodiment 6
Power battery pack total volume: 414L (=2130*1380*137*0.000001+11)；The length of backpack body=2130 mm, width =1380 mm, thickness=137 mm；Shared by the enclosure volumes such as pallet and upper cover and internal cell management system and other Power entry modules The summation of volume: 58L；Real surplus can accommodate the volume of single battery and/or crossbeam or stringer: 312L.
In embodiment 7
Power battery pack total volume: 508L (=2630*1380*137*0.000001+11)
The length of backpack body=2630 mm, width=1380 mm, thickness=137 mm；The enclosure volumes such as pallet and upper cover and inside electricity The summation of volume shared by pond management system and other Power entry modules: 119L；Real surplus can accommodate single battery and/or crossbeam The volume of or stringer: 389L.
Table 1
Those skilled in the art is by comparing comparative example 1 and embodiment 1-3, comparative example 2 and embodiment 4-5, comparative example 3 and reality Example 6,7 is applied, the battery pack 10 according to the embodiment of the present application is not only known, passes through the arrangement of rectangular unit cell 100, dimensional parameters And the design of other factors, space utilization rate can break through the limitation of existing battery pack 10, to realize that higher energy is close Degree.And the raising of this energy density can be amplified with the increase of the overall volume of battery pack 10, i.e., volume be got over Big battery pack 10 is more significant to the improvement effect of energy density using the scheme of the embodiment of the present application.
As shown in Figure 25-Figure 29, disclosed herein as well is a kind of vehicles 1.
The vehicle 1 of the application includes the battery pack 10 of any of the above-described kind of embodiment.The vehicle 1 of the application can be electronic Vehicle, including commercial vehicle, special purpose vehicle, electric bicycle, battery-operated motor cycle, Segway Human Transporter etc. need to mention using battery pack 10 for it For electric energy, with the electric vehicle for driving it to travel.
Wherein, the bottom of vehicle 1 is arranged in battery pack 10, and battery pack case 200 is fixedly connected with the chassis of vehicle 1, electricity The pallet of pond packet 10 can be independently arranged, can also be integrally disposed with the chassis of vehicle 1.
In some embodiments, electric vehicle includes the battery pack 10 that electric vehicle bottom is arranged in, battery pack case 200 It is fixedly connected with the chassis of electric vehicle, first direction is the vehicle-body width direction of electric vehicle, that is, the left and right directions of electric vehicle, the Two directions are the length of wagon direction of electric vehicle, that is, the front-rear direction of electric vehicle.Electric vehicle includes that electric vehicle bottom is arranged in One battery pack 10, vehicle-body width direction arrangement of the width direction of battery pack 10 along electric vehicle, the length direction of battery pack 10 It is arranged along the length of wagon direction of electric vehicle.
In other embodiments, electric vehicle may include multiple battery packs 10 that electric vehicle bottom is arranged in, multiple The shape and size of battery pack 10 may be the same or different, and specifically, each battery pack 10 can be according to electric vehicle chassis Shape and size be adjusted, length direction of multiple battery packs 10 along vehicle body, that is, front-rear direction arrangement.
In some embodiments, the width F and body width W of battery pack meet: 50%≤F/W≤80%.
In some embodiments, length L and body width of the rectangular unit cell 100 in the width direction of battery pack 10 W meets: 46%≤L/W≤76%, 500mm≤W≤2000mm.
In some embodiments, in a kind of embodiment that the disclosure provides, the width of battery pack case 200 in a first direction The ratio for spending L3 and body width W meets: 50%≤L3/W≤80% can pass through the width along vehicle body in the present embodiment Direction is only arranged battery pack case 200 and realizes, when battery pack case 200 is multiple, multiple battery pack cases 200 are along vehicle The length direction of body arranges.For most vehicles 1, body width 500mm-2000mm, for example, 500mm, 1600mm, 1800mm, 2000mm, length of wagon 500mm-5000mm, for passenger car, the width of passenger car is usually 500mm-1800mm, the length of vehicle body are 500mm-4000mm.
In some embodiments, the ratio of the length L4 and body width W in a first direction of rectangular unit cell 100 is full Foot: 46%≤L4/W≤76%.Consider battery pack case 200 the first frame 201 and the second frame 202 thickness the case where Under, when the ratio of the length L4 and body width W in a first direction of rectangular unit cell 100 meets: 46%≤L4/W≤ When 76%, in the present embodiment, a rectangular unit cell 100 can be only set along the width direction of vehicle body and realized.At other In possible embodiment, in the case where meeting such size requirement, multiple cell arrays can be set in the longitudinal direction 400 or multiple rectangular unit cells 100 realize.As an implementation, rectangular unit cell 100 is in a first direction Length L4 is 500mm-1000mm.
It should be noted that in some embodiments in the application, although disclosing the two of a rectangular unit cell 100 The scheme that end is supported with the first frame 201 and the cooperation of the second frame 202 respectively, but in the actual production process, it is possible to go out The rectangular unit cell 100 of the length dimension matched with body width can not now be made；In other words, rectangular unit cell 100, because of certain reasons, can not be processed to the length that we want.Because electric vehicle is to the voltage of rectangular unit cell 100 Platform requires, and under fixed material system, to reach certain voltage platform, required rectangular unit cell 100 volume is certain；This is allowed for, if increasing the length of rectangular unit cell 100, will reduce its thickness or width Degree.And on the other hand, it is ensured that the surface area of entire battery, to improve heat sinking function, herein under the premise of, can not pass through reduces square The length of width (height) the Lai Zengjia rectangular unit cell 100 of shape single battery 100；Meanwhile on the car body, height space Using being also limited, in order to utmostly reduce influence, generally the width (height) of rectangular unit cell 100 is not adjusted It is whole.Therefore, rectangular unit cell 100 can only be changed and change entire rectangle along the length of first direction and the thickness of second direction The surface area of single battery 100；So, if it is desired to increase length, maximum probability can be from the point of view of reducing thickness.And it is practical On, for rectangular unit cell 100 because inside needs to be added pole piece and associated materials, the variation of thickness is that have a least limit Value；This is allowed for, the length of rectangular unit cell 100 because by thickness with limiting value influenced, the length on first direction changes Change ability, is also limited, the length of increase rectangular unit cell 100 that can not be unlimited.
It therefore, in some embodiments, can be above-mentioned to solve by the way that two rectangular unit cells 100 are arranged in a first direction Problem.For example, former along the scheme that a rectangular unit cell 100 is arranged in first direction, rectangular unit cell 100 is along first party To length be 1000mm, then, after this scheme, in a first direction be arranged two rectangular unit cells 100, Mei Geju The length of shape single battery 100 is probably 450mm or so.It why is less than the half of 1000mm, is because centre needs to add Installation position.
Disclosed herein as well is a kind of energy storage devices 2.
As shown in figure 30, the energy storage device 2 of the application includes the battery pack 10 of any of the above-described kind of embodiment.The storage of the application Energy device 2 can be used for household backup power source, commercial backup power source, outdoor power system, the peak regulation energy storage device in power station, various traffic The electrical source of power etc. of tool.
A kind of battery pack, comprising: battery pack case and multiple rectangular unit cells, the battery pack case have first party To and perpendicular to the first direction second direction；It is formed at least one rectangular battery in the battery pack case and accommodates list Member；Each rectangular battery housing unit is equipped with rectangular battery housing unit, and the multiple rectangular unit cell is along the second party To being arranged in the rectangular battery housing unit；The rectangular unit cell with a thickness of D, the length of the rectangular unit cell For L, the height of the rectangular unit cell is H；The battery pack is greater than or equal to L along the size of the first direction；At least One rectangular unit cell extends to the rectangular battery from the side of the rectangular battery housing unit along the first direction The other side of housing unit, and meet: L > H, L > D, 600mm≤L≤2500mm, 23≤L/D≤208.
In some embodiments, the volume of the rectangular unit cell is V, at least one described described rectangular unit cell Meet: 0.0005mm-2≤L/V≤0.002mm-2。
In some embodiments, at least one described single battery meets: 600mm≤L≤1000mm.
In some embodiments, at least one described single battery meets: 50≤L/D≤70.
In some embodiments, the battery pack case includes bottom case and sealing cover, and the bottom case connects shape with sealing cover At at least one described rectangular battery housing unit.
In some embodiments, a rectangle is only accommodated along the first direction in each rectangular battery housing unit Single battery.
In some embodiments, first crossbeam is provided in the battery pack case, the first crossbeam is along described first Direction extends；The first crossbeam will be divided into two rectangular battery housing units inside the battery pack case.
In some embodiments, second cross beam is provided in the battery pack case, the second cross beam is along described second Direction extends；The second cross beam will be divided into two rectangular battery housing units inside the battery pack case.
In some embodiments, first crossbeam and second cross beam, the first crossbeam are provided in the battery pack case Extend along the first direction, the second cross beam extends along the second direction, and the first crossbeam and second cross beam intersect It is arranged and four rectangular battery housing units will be divided into inside the battery pack case.
In some embodiments, the bottom case is pallet, and the pallet includes the be oppositely arranged along the first direction One frame and the second frame form the rectangular battery housing unit between first frame and second frame, described Rectangular unit cell one end is supported in first frame, and the other end is supported in second frame.
In some embodiments, first frame and second frame respectively include and the rectangular unit cell The inner wall of the matched inner wall of both ends of the surface, first frame and second frame respectively with the rectangular unit cell Sandwiched insulation board between end face.
In some embodiments, the inner wall towards the rectangular unit cell of first frame and second frame Face has the support plate of protrusion, and the side towards the sealing cover of the support plate is equipped with supporting surface, and the supporting surface is used for Rectangular unit cell is supported, the side away from the sealing cover of the support plate has for installing the battery pack case The mounting surface of bottom plate, the support plate, the rectangular unit cell and the bottom plate are limited jointly for accommodating insulating layer Incubation cavity.
In some embodiments, the inner ring of one end away from the sealing cover of first frame and second frame Deep gouge with annular, the bottom wall of the deep gouge form the mounting surface, and the bottom plate is installed on the deep gouge.
In some embodiments, the inner wall towards the rectangular unit cell of first frame and second frame Face all has the first joint face, and the distance of first joint face to the sealing cover is less than the supporting surface to the sealing cover Distance, the rectangular unit cell is connected with first joint face.
In some embodiments, the inner wall towards the rectangular unit cell of first frame or second frame There is at least two-stage step, two of them step surface to be respectively formed first joint face and the supporting surface in face.
In some embodiments, further includes: end plate, the rectangular unit cell are all provided with along the both ends of the length direction of itself There is the end plate, the rectangular unit cell is connected by the end plate with first joint face.
In some embodiments, the end plate includes: the header body being oppositely arranged with the end face of the rectangular unit cell Be connected with the header body and to first joint face protrude the first connecting plate, first connecting plate and described first Joint face is connected.
In some embodiments, at least one of two end faces of the rectangular unit cell be equipped with explosion-proof valve, two The header body of at least one of the end plate is equipped with via hole corresponding with the explosion-proof valve, first frame and described The exhaust passage that at least one of second frame is equipped with gas vent corresponding with the via hole and is connected to the gas vent.
In some embodiments, it is limited between first joint face and the sealing cover for accommodating battery management member Device and management accommodating chamber with electrical component.
In some embodiments, the pallet includes bottom plate, and the rectangular unit cell is spaced apart setting with the bottom plate.
In some embodiments, insulating layer is equipped between the rectangular unit cell and the bottom plate.
In some embodiments, the pallet further includes the third frame and the 4th frame being oppositely arranged in a second direction, The third frame and the 4th frame provide inside pressing force for its neighbouring rectangular unit cell.
In some embodiments, the battery pack further include: elastic device, the third frame and with the third frame Between the adjacent rectangular unit cell and the 4th frame and the rectangular unit adjacent with the 4th frame Between battery at least one at elastic clip be equipped with the elastic device.
In some embodiments, further includes: side plate, the third frame and the rectangle adjacent with the third frame Institute is equipped between single battery and between the 4th frame and the rectangular unit cell adjacent with the 4th frame State side plate.
In some embodiments, the side plate include the side plate body being oppositely arranged with the side of the rectangular unit cell and Be connected with the side plate body and to the second connecting plate that the third frame or the 4th frame protrude, the third frame and 4th frame is equipped with the second joint face towards the sealing cover, second connecting plate and the second joint face phase Even.
In some embodiments, further includes: panel, the upper and lower surfaces of the rectangular unit cell are connected with institute State panel；Two end faces of end plate, the rectangular unit cell are equipped with the end plate；Side plate, outermost two squares The lateral surface of shape single battery is equipped with the side plate；Wherein the end plate and the side plate are connected with two panels, The inner wall towards the rectangular unit cell of first frame and second frame has supporting surface and joint face, institute The both ends for stating rectangular unit cell are supported in the supporting surface, and the end plate and the side plate are connected with the joint face.
In some embodiments, further includes: heat exchanger plates, the heat exchanger plates are installed on the upper table of the rectangular unit cell Face.
In some embodiments, the volume of the rectangular unit cell is V, is highly H, is met: 0.0001mm-2≤H/V ≤0.00015mm-2。
In some embodiments, the length of the rectangular unit cell is L, is highly H, with a thickness of D, wherein 4≤L/H≤ 21。
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the application.In the present specification, to above-mentioned term Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description Point can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that embodiments herein, it will be understood by those skilled in the art that: not A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle and objective of the application, this The range of application is defined by the claims and their equivalents.

Claims (35)

1. a kind of battery pack characterized by comprising battery pack case and multiple rectangular unit cells, the battery pack case With first direction and perpendicular to the second direction of the first direction；The battery pack is greater than along the size of the first direction Or it is equal to 600mm, at least one rectangular battery housing unit is formed in the battery pack case；The multiple rectangular unit electricity Pond is arranged in the rectangular battery housing unit along the second direction；The rectangular unit cell prolongs along the first direction It stretches, and is equipped with a rectangular unit cell in each rectangular battery housing unit in said first direction；The rectangle Single battery with a thickness of D, the length of the rectangular unit cell is L, and the height of the rectangular unit cell is H；
The battery pack is greater than or equal to L along the size of the first direction；
The length direction of at least one rectangular unit cell is along the first direction from the side of the rectangular battery housing unit The other side of the rectangular battery housing unit is extended to, and is met: L > H, L > D, 600mm≤L≤2500mm, 23≤L/D ≤208。
2. battery pack according to claim 1, which is characterized in that the volume of the rectangular unit cell be V, it is described at least One rectangular unit cell meets: 0.0005mm-2≤L/V≤0.002mm-2。
3. battery pack according to claim 1, which is characterized in that at least one described rectangular unit cell meets: 600mm ≤L≤1000mm。
4. battery pack according to claim 1, which is characterized in that at least one described rectangular unit cell meets: 50≤ L/D≤70。
5. battery pack according to claim 1, which is characterized in that the battery pack case includes bottom case and sealing cover, institute Bottom case is stated to connect to form at least one described rectangular battery housing unit with sealing cover.
6. battery pack according to claim 1 or 5, which is characterized in that it is provided with first crossbeam in the battery pack case, The first crossbeam extends along the first direction；The first crossbeam will be divided into two rectangle electricity inside the battery pack case Pond housing unit.
7. battery pack according to claim 1 or 5, which is characterized in that it is provided with second cross beam in the battery pack case, The second cross beam extends along the second direction；The second cross beam will be divided into two rectangle electricity inside the battery pack case Pond housing unit.
8. battery pack according to claim 1 or 5, which is characterized in that be provided with first crossbeam in the battery pack case And second cross beam, the first crossbeam extend along the first direction, the second cross beam extends along the second direction, described First crossbeam and second cross beam are arranged in a crossed manner and will be divided into four rectangular battery housing units inside the battery pack case.
9. battery pack according to claim 5, which is characterized in that the bottom case is pallet, and the pallet includes along described The first frame and the second frame that first direction is oppositely arranged, form the square between first frame and second frame Shape battery housing unit, described rectangular unit cell one end are supported in first frame, and the other end is supported in second side Frame.
10. battery pack according to claim 9, which is characterized in that first frame and second frame wrap respectively It includes and the matched inner wall of the both ends of the surface of the rectangular unit cell, the inner wall point of first frame and second frame The sandwiched insulation board not between the end face of the rectangular unit cell.
11. battery pack according to claim 9, which is characterized in that the direction of first frame and second frame The inner wall of the rectangular unit cell has the support plate of protrusion, and the side towards the sealing cover of the support plate is equipped with Supporting surface, the supporting surface are used to support rectangular unit cell, and the side away from the sealing cover of the support plate, which has, to be used In the mounting surface for the bottom plate for installing the battery pack case, the support plate, the rectangular unit cell and the bottom plate are common Limit the incubation cavity for accommodating insulating layer.
12. battery pack according to claim 11, which is characterized in that first frame and second frame deviate from The inner ring of one end of the sealing cover has the deep gouge of annular, and the bottom wall of the deep gouge forms the mounting surface, the bottom plate peace Loaded on the deep gouge.
13. battery pack according to claim 11, which is characterized in that the direction of first frame and second frame The inner wall of the rectangular unit cell all has the first joint face, and the distance of the first joint face to the sealing cover is less than To the distance of the sealing cover, the rectangular unit cell is connected the supporting surface with first joint face.
14. battery pack according to claim 13, which is characterized in that the direction of first frame or second frame There is the inner wall of the rectangular unit cell at least two-stage step, two of them step surface to be respectively formed first joint face With the supporting surface.
15. battery pack according to claim 13, which is characterized in that further include: end plate, the rectangular unit cell is along certainly The both ends of the length direction of body are equipped with the end plate, and the rectangular unit cell passes through the end plate and first joint face It is connected.
16. battery pack according to claim 15, which is characterized in that the end plate includes: and the rectangular unit cell The header body that is oppositely arranged of end face and be connected with the header body and to the first connecting plate that first joint face protrudes, institute The first connecting plate is stated to be connected with first joint face.
17. battery pack according to claim 16, which is characterized in that in two end faces of the rectangular unit cell extremely Few one is equipped with explosion-proof valve, and the header body of at least one end plate is equipped with via hole corresponding with the explosion-proof valve, described At least one of first frame and second frame are equipped with gas vent corresponding with the via hole and connect with the gas vent Logical exhaust passage.
18. battery pack according to claim 13, which is characterized in that limited between first joint face and the sealing cover It makes for accommodating battery management component and the management accommodating chamber with electrical component.
19. battery pack according to claim 9, which is characterized in that the pallet includes bottom plate, the rectangular unit cell Setting is spaced apart with the bottom plate.
20. battery pack according to claim 19, which is characterized in that set between the rectangular unit cell and the bottom plate There is insulating layer.
21. battery pack according to claim 9, which is characterized in that the pallet further includes being oppositely arranged in a second direction Third frame and the 4th frame, the third frame and the 4th frame provide inside pressure for its neighbouring rectangular unit cell Clamp force.
22. battery pack according to claim 21, which is characterized in that the battery pack further include: elastic device, described Between three frames and the rectangular unit cell adjacent with the third frame and the 4th frame and with the described 4th Between the adjacent rectangular unit cell of frame at least one at elastic clip be equipped with the elastic device.
23. battery pack according to claim 21, which is characterized in that further include: side plate, the third frame and with it is described Between the adjacent rectangular unit cell of third frame and the 4th frame and it is adjacent with the 4th frame described in The side plate is equipped between rectangular unit cell.
24. battery pack according to claim 23, which is characterized in that the side plate includes and the rectangular unit cell Side plate body that side is oppositely arranged and be connected with the side plate body and protruded to the third frame or the 4th frame the Two connecting plates, the third frame and the 4th frame are equipped with the second joint face towards the sealing cover, and described second connects Fishplate bar is connected with second joint face.
25. battery pack according to claim 9, which is characterized in that further include:
Panel, the upper and lower surfaces of the rectangular unit cell are connected with the panel；
Two end faces of end plate, the rectangular unit cell are equipped with the end plate；
The lateral surface of side plate, outermost two rectangular unit cells is equipped with the side plate；Wherein
The end plate and the side plate are connected with two panels, first frame and second frame towards institute The inner wall for stating rectangular unit cell has supporting surface and joint face, and the both ends of the rectangular unit cell are supported in the support Face, the end plate and the side plate are connected with the joint face.
26. according to claim 1-5, battery pack described in any one of 9-25, which is characterized in that further include: heat exchanger plates, it is described Heat exchanger plates are installed on the upper surface of the rectangular unit cell.
27. according to claim 1-5, battery pack described in any one of 9-25, which is characterized in that the rectangular unit cell Volume is V, is highly H, is met: 0.0001mm-2≤H/V≤0.00015mm-2。
28. according to claim 1-5, battery pack described in any one of 9-25, which is characterized in that the rectangular unit cell Length is L, is highly H, with a thickness of D, wherein 4≤L/H≤21.
29. a kind of vehicle, which is characterized in that including the battery pack as described in any one of claim 1-28.
30. vehicle according to claim 29, which is characterized in that the bottom of the vehicle, institute is arranged in the battery pack Battery pack case is stated to be fixedly connected with the chassis of the vehicle.
31. the vehicle according to claim 29 or 30, which is characterized in that the vehicle includes being arranged in the vehicle bottom A battery pack, the width direction of the battery pack arranges along the vehicle-body width direction of the vehicle, the length of the battery pack Direction is spent to arrange along the length of wagon direction of the vehicle.
32. vehicle according to claim 31, which is characterized in that the width F and body width W of the battery pack meet: 50%≤F/W≤80%。
33. vehicle according to claim 32, which is characterized in that the length direction of the rectangular unit cell is along battery pack Width direction arrangement, and in the width direction of electric vehicle, the length L and body width W of the rectangular unit cell are full Foot: 46%≤L/W≤76%.
34. vehicle according to claim 33, which is characterized in that the body width W meets: 500mm≤W≤ 2000mm。
35. a kind of energy storage device, which is characterized in that including the battery pack as described in any one of claim 1-28.
CN201910544377.6A 2019-01-09 2019-06-21 Battery pack, vehicle and energy storage device Active CN110165117B (en)

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CN201920959858.9U Active CN210403798U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201920948746.3U Active CN210403797U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210017475.6A Active CN114221072B (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN202210017985.3A Active CN114221082B (en) 2019-01-09 2019-06-21 Single battery, battery pack without module frame, vehicle and energy storage device
CN201910544020.8A Active CN110165116B (en) 2019-01-09 2019-06-21 Battery pack, vehicle and energy storage device
CN202210017488.3A Active CN114256550B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201910544153.5A Active CN111430597B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210555886.0A Active CN114824631B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210017491.5A Active CN114256551B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210244489.1A Active CN114512758B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210555873.3A Active CN115020887B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210017931.7A Pending CN114256546A (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN201910544940.XA Active CN111430601B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210555872.9A Active CN115020893B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201910544144.6A Active CN111430596B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201910544169.6A Active CN111430599B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210244592.6A Active CN114512760B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202111434651.8A Pending CN114597564A (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201920971038.1U Active CN210403800U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201920971074.8U Active CN210167401U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210244581.8A Active CN114512759B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201910544171.3A Active CN111430600B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201910544929.3A Active CN110165118B (en) 2019-01-09 2019-06-21 Battery pack, vehicle and energy storage device
CN202210017973.0A Active CN114256554B (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN201920959960.9U Active CN210403799U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210555862.5A Active CN115020886B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201920942022.8U Active CN209389112U (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201910544377.6A Active CN110165117B (en) 2019-01-09 2019-06-21 Battery pack, vehicle and energy storage device
CN201910542987.2A Active CN110165115B (en) 2019-01-09 2019-06-21 Battery pack, electric vehicle and energy storage device
CN202111434668.3A Active CN114597565B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201920948382.9U Active CN210403795U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210554644.XA Active CN114824630B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201910542986.8A Active CN110165114B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN202210017612.6A Pending CN114256552A (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201910544950.3A Active CN111430602B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201910544947.1A Active CN110379963B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201920942021.3U Active CN209389111U (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201920948604.7U Active CN210403796U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210017903.5A Active CN114256553B (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN201910544161.XA Active CN111430598B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
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CN202210017475.6A Active CN114221072B (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN202210017985.3A Active CN114221082B (en) 2019-01-09 2019-06-21 Single battery, battery pack without module frame, vehicle and energy storage device
CN201910544020.8A Active CN110165116B (en) 2019-01-09 2019-06-21 Battery pack, vehicle and energy storage device
CN202210017488.3A Active CN114256550B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201910544153.5A Active CN111430597B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210555886.0A Active CN114824631B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210017491.5A Active CN114256551B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210244489.1A Active CN114512758B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210555873.3A Active CN115020887B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202210017931.7A Pending CN114256546A (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN201910544940.XA Active CN111430601B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210555872.9A Active CN115020893B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201910544144.6A Active CN111430596B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201910544169.6A Active CN111430599B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210244592.6A Active CN114512760B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN202111434651.8A Pending CN114597564A (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201920971038.1U Active CN210403800U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201920971074.8U Active CN210167401U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210244581.8A Active CN114512759B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201910544171.3A Active CN111430600B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201910544929.3A Active CN110165118B (en) 2019-01-09 2019-06-21 Battery pack, vehicle and energy storage device
CN202210017973.0A Active CN114256554B (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN201920959960.9U Active CN210403799U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210555862.5A Active CN115020886B (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
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CN201920948382.9U Active CN210403795U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210554644.XA Active CN114824630B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201910542986.8A Active CN110165114B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN202210017612.6A Pending CN114256552A (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201910544950.3A Active CN111430602B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201910544947.1A Active CN110379963B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
CN201920942021.3U Active CN209389111U (en) 2019-01-09 2019-06-21 Single battery, power battery pack and electric vehicle
CN201920948604.7U Active CN210403796U (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN202210017903.5A Active CN114256553B (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN201910544161.XA Active CN111430598B (en) 2019-01-09 2019-06-21 Monomer battery, power battery package and electric motor car
CN201910544975.3A Active CN111430603B (en) 2019-01-09 2019-06-21 Battery pack without module frame, vehicle and energy storage device
CN201910542795.1A Active CN110165113B (en) 2019-01-09 2019-06-21 Power battery pack and electric vehicle
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